Business Statistics

The goal of psychoanalysis is

Given, $$Pleft( A
ight) = frac{m}{{m + n}}$$ This formula may be used in

Which of the following statement is/are correct?

The Enterprise Resource Planning (ERP) system deals

Sourcing of MIS includes

If A 1 , A 2 . . . . . . . . A n are 'n' mutually exclusive and exhaustive events and B is a common event, then Baye's theorem deals with

Match the following List-I (Degree of correlation) List-II (Measurement) a. Absence of correlation 1. +0.90 or More b. Moderate 2. +1 c. Perfect 3. +0.60 to +0.75 d. Very high 4. 0

The following are the two statements relating to the theory of probability. Indicate the statements being correct or incorrect. Statement I The probability of the joint occurrence of independent events A and B is equal to the probability of event A multiplied by the probability of event B or vice-versa . Statement II The probability of the joint occurrence of independent event A and dependent event B is equal to the probability of event A multiplied by the conditionalprobability of event B when event A has occurredor vice-versa .

Benefits of Integrated Data Processing are

The role of the compiler is

Probability is the limit of the . . . . . . . . of success in an infinite sequence of trials where all trials have been performed under essentially the same conditions

A Bernoulli process has all but which one of the following properties?

The average number of customers per minute arriving at a super bazaar is 2. Using the Poisson distribution, find the probability that during one particular minute exactly three customers will arrive

Given The above diagram is related with

Poisson distribution can be expressed by

Information is a product of

Which of the following is not a characteristic of normal probability distribution?

Bernoulli's rule probability is indicated by

In a sample having 23 pairs of observations, the correlation coefficient is 0.52 and in another sample having 28 observations, the correlation coefficient is 0.71. Is there significant difference between the two sample coefficients?

$${chi ^2}$$ is tested by

Which decision systems are based on comparative analysis?

In the security system, the defence mechanism of the system i.e., the ability to protect the system from both, known and unknown . . . . . . . . is tested.

When a researcher wants to test whether two samples can be regarded as drawn from the normal populations having same variance by using variance ratio, which one of the following tests of hypothesis is appropriate?

Under the Karl Pearson's Rule, correlation is computed by

Which of the following statement is/are true?

If μ is equal to 4 then variance of exponential probability distribution is

Which of the following is/are true statements?

What is the probability of throwing two fours in two throws of a die?

Management science model consists

$$F = frac{{{S_1}^2}}{{{S_2}^2}}$$ xa0 is

Mark the incorrect statement

Match the following List-I (Moments) List-II (Constants of Binomial Distribution) a. μ 1 1. 0 b. μ 2 2. 3n 2 p 2 q 2 + npq (1 - 6pq) c. μ 3 3. npq (q - p) d. μ 4 4. (npq)

What is the probability of getting all the heads in four throws of a coin?

The mean wage of a certain group of workers is 500 rupees and s is 100. Find what percentage of workers get above 375 rupees

System analysis helps in

The probability of a bomb hitting a target is 1 / 5 . Two bombs are enough to destroy a bridge. If six bombs are aimed at the bridge, find the probability that the bridge is de stroyed

While correlation analysis tests the . . . . . . . . with which two or more phenomena covary, regression analysis measures the nature and extent of this relation, this enabling as to make prediction.

Which of the following features must be kept in mind while formulating questionnaire?

The features of LAN consist

Degree of correlation includes

Which of the following is possible in a chi-square goodness of fit test?

If a decision can be based on a rule, method or even guidelines it is called

Which one is not objective of MIS

Information technology strategic decision includes

The transaction is processed for

Which of the following is/are not the basic feature of ERP?

Which of the following is a probability method?

Which of the following is/are part of decision support system?

If A and B are mutually exclusive events P(AB) =

If $$F sim Fleft( {{
u _1},,{
u _2}}
ight)$$ xa0 xa0then $$1/F sim $$

Chebyshev's theorem provides that atleast 89% of the values will lie within ±3 standard deviations from the mean for

Attributes of decision support system are

Match the items of List-I with those of List-II and choose the correct answer. List-I List-II a. The probability of two events occurring together or in succession 1. Marginal probability b. The probability of occurring one event given that another event has occurred 2. Posterior probability c. The probability of occurring a single event 3. Subjective probability d. The probability revised in the light of additional information 4. Joint probability 5. Conditional probability

The value set of α is known as

The Management Information System applies on

Which of the following statements are not true with regard to questionnaire?

Let b yx and b xy denote the regression coefficient of y and x on of x on y, respectively. Then, b yx = b xy implies that

System analysis plays a central role in the development of

If p = 0.6 for a particular Bernoulli process, the calculation $$left( {frac{{8!}}{{5! imes 3!}}}
ight){left( {0.6}
ight)^3}{left( {0.4}
ight)^3}$$ xa0 xa0 indicates the probability of happening of

In conditional probability it is

Conditions for negative exponential distribution considering mean (μ) is that

A researcher wants to test the significance of the differences of the average performance of more than two sample groups drawn from a normally distributed population, which one of the following hypothesis testing tests is appropriate?

If μ is equal to 8 then the standard deviation of exponential probability distribution is

Statement I A sampling distribution of mean, prepared on the basis of small sized samples from a population which is not normally distributed, is not normally distributed. Statement II To test the significance of the difference between means of two small sized samples when the parameter values of the standard deviations are given, Z-test can be applied.

Cumulative probability function is

TQM of information systems consists

Dispersions are not calculated on

What is the probability of the happening of an event?

Which of the following is the application of $${chi ^2}$$-test?

A and B play a game in which A's chance of winning is $$frac{3}{5}$$. In a series of 6 games, what is the chance that A will win atleast 4 games?

Which of the following statements are correct 1. Significance level is opposite to confidence level. 2. Significance level is complementary to confidence level. 3. Significance level is the rejection area.

Given The above figure shows about

The real time systems are

A line used to estimate the value of one variable from the value of the other consists of a line through the points, drawn in such a manner as to represent the average relationship between the two variables is known as

Which of the following statement is false about data collection?

If in a Binomial distribution P is very small and n is very large but nP = m. i.e., expected or mean value of binomial distribution is not negligible, then if approximate closely to the

The functions of MS-DOS consist

If two or more quantities vary in sympathy so that movement in the one tend to be accompanied by corresponding movements in the other then they are said to be

A random variable X has the following probability distribution X 2 0 2 Probability 0.25 0.50 0.25 The mean and variance of X shall be

In statistical analysis, the burden of proof lies traditionally with

Business system consists

From the following statements choose the correct statements. Statement I A statistic is a characteristic of a population. Statement II The standard error of mean is the standard deviation of the sampling distribution. Statement III The standard error of mean decreases in direct proportion to sample size.

. . . . . . . . processing is designed to process more than one type of transactions to bring out the specific business results in one or more business functions.

Which of the following statement is correct about Electronic Business Technology?

How many degrees of freedom should be used to apply chi-square test statistic oil a contingency table, having 5 row and 4 columns?

In Job order cost system the costs are assigned to the jobs passing through the plant and are accumulated by recording the basic job statistics on the

When the relationship is of quantitative nature, the appropriate statistical tool for discovering and measuring the relationship and expressing it, in brief formula is known as

"The centre of interest in sampling theory is the development of criteria for assisting common sense or educated judgement concerning the magnitude of chance fluctuation in statistical ratios, averages and co-efficients." Who said?

It is often more important to find out what the relation actually is, in order to estimate or product one variable and the statistical technique appropriate to such a case is called

Match the following List-I (Phases of decision making process) List-II (Explanation) a. Intelligence 1. Inventing, developing, and analyzing possible courses of action. This involves processes to understand the problem, to generate solutions, and to test solutions for feasibility. b. Design 2. Selecting an alternative or course of action from those available. A choice is made and implemented. c. Choice 3. Searching the environment for conditions calling for decisions. Data inputs are obtained, processed, and examined for clues that may identify problems or opportunities.

Classifications done on the basis of attributes blindness and region are known as

If your score in an exam was 80, with a mean of 60, what would be the standardised score for this exam if the standard deviation is 15 ?

Suppose I discover that as I eat more vegetables, my body weight decreases. I have demonstrated

Match the following. List-I (Theoretical Distribution) List-II (Formula) a. Mean of binomial distribution 1. np b. Mean of poisson distribution 2. m c. Standard deviation of binomial distribution 3. $$sqrt {{ ext{npq}}} $$ d. Standard deviation of poisson distribution 4. $$sqrt { ext{m}} $$

Correlation means

MIS can be used in controlling

Which of the following statements are correct? 1. Correlation analysis helps in determining the relationship between two or more variables. It does not tell us anything about the cause and effect relationship. 2. The ratio of explained variation to the total variation is called the coefficient of correlation. 3. Pearsonian coefficient always assumes linear relationship, and is unduly effected by the extreme items.

Given N = 8, $$overline X $$ = 74.5, A x = 69.0, σ x = 13.07, $$overline Y $$ = 125.5, A y = 112, σ y = 15.85, $$sum $$dxdy = 2176. Find out correlation

Eight coins are tossed together and the occurrence of a head is termed a success. Write down the Binomial distribution of probabilities for the occurrence of 0, 1, 2 . . . . 8 heads. What is the arithmetic mean and what is the variance of this distribution?

$$F = frac{{{S^2}_1}}{{{S^2}_2}}$$ xa0 is a

Most experimental subjects try to help the researcher by doing their best to perform as they think they should. This problem is called

The inventory application is designed to

The probable error can be calculated by

Match the following. List-I List-II a. Judgement 1. Probability sampling b. Stratified 2. Non-random sampling c. Cluster 3. Non-probability sampling d. Quota 4. Random sampling

Which of the following statements are true? 1. The classical approach to probability theory requires that the total number of possible outcomes be known or calculated and that each of the outcomes be equally likely. 2. A marginal probability is also known as unconditional probability. 3. For three independent events, the joint probability of the three events, P (ABC) = P (A) × P (B/A) × P (C/AB) 4. Two events are mutually exclusive, exhaustive and equally likely, the probability of either event A or B or both occurring P(A or B) = P(A) + P(B)

The form of alternative hypothesis can be

The value of Karl Pearson's co-efficient of correlation may be

Control methods are used to

If p = q = $$frac{1}{2}$$, the frequency distribution will be

Technical evaluation includes

Growing popularity of DBMS is due to

A researcher conduct a hypothesis test and observes values from sample mean and sample standard deviation when n = 25, that do not lead to rejection of null hypothesis. He calculates the p value as 0.0667. What will happen to the p value if he observes the same sample mean and standard deviation for a sample > 25?

Three helicopter crewmen are needed in an emergency. There are six crewmen on duty. In how many ways could three of them be chosen to fly the machine?

Binomial distribution is

Match the following. List-I (Moments) List-II (Constants of Binomial Distribution) a. μ 1 1. 3n 2 p 2 q 2 + npq (1 - 6pq) b. μ 2 2. npq (q - p) c. μ 3 3. npq d. μ 4 4. 0

Regression coefficient is

Student's t-test was developed by

Which of following is/are characteristics of Karl Pearson's coefficient of correlation?

Given $$sum $$Y = Na + b$$sum $$Y is

What is the probability of not happening of an event?

The device used to estimating the value of one variable from the value of the other consists of a line through the points, drawn in such a manner as to represent the average relationship between the two variables, such a line is called the

In hypothesis testing 'P' value ranges between

Which of the following statement is true with regard to hypothesis testing of null and alternative hypothesis?

If the manager operates in a known environment then it is a

Which one of the following is a false statement?

DFDs includes

Situations in which $${chi ^2}$$ -test is not applicable is

The size of Binomial distribution depends on

The MIS goals and objectives will consider . . . . . . . . of the firm.

What is the chance of drawing a queen in a draw from a pack of 52 cards?

Find the probability that in a family of 4 children there will be at least one boy. Assume that the probability of a male birth is $$frac{1}{2}$$.

. . . . . . . . errors are made when we accept a null hypothesis which is not true.

. . . . . . . . is a process of transporting the data from one location to the other

Six dice are thrown 729 times. How many times do you expect the dice to show five or six?

You are given the following information about advertising expenditure and sales. Advertisement (X) Sales (Y) (Rs. in lakh) Arithmetic Mean 10 90 Standard Deviation 3 12 Correlation coefficient between advertising expenditure and sales 0.80. What is the likely sales for advertising budget of Rs. 15 lakh?

From a well shuffled pack of 52 cards a card is selected at random. Find the probability that it is a black coloured card

In a negatively skewed distribution,

Management information system plan includes

In two large populations there are 35 and 30 per cent of fair haired people. Will the differ ence disappear at 5% level of significance, if samples of 1500 and 1000 are respectively taken from the two populations?

Given, N = 15, $$overline { ext{X}} $$ = 25, $$overline { ext{Y}} $$ = 18, $$sum $$d 2 x = 136, $$sum $$d 2 y = 138, $$sum $$dxdy = 122. Calculate the correlation coefficient.

DD-MM-YY or MM-DD-YY or YY-MM-DD code is related with

A trader decides that he has surplus stocks of 9 different kinds of goods. He decides to make-up gift parcels, each to contain four different goods, which he will sell at a special price. How many different kinds of parcel may he produce?

Type of network includes

The performance testing

A machine on an average produces 5% defective articles. What are the mean and standard deviation in sets of 100 articles?

Which of the following statement is incorrect?

Which of the following is/are reasons of MIS failure?

Given X = 0.85y, Y = 0.89x, σ z = 3, find σ y

In a medical test, where the null hypothesis is 'the patient does not have the disease' and the alternative hypothesis is 'the patient has the disease'. Suppose a patient has a disease and needs treatment. In the hypothesis testing process, which of the following error is more serious than the others.

Suppose on an average 1 house in 1000 in a certain district has a fire during a year. If there are 2000 houses in that district what is the probability that exactly 5 houses will have a fire during the year?

The probability of the happening of anyone of the several equally likely events is the ratio of the number of events favourable to it to the total number of

SSAD includes

Match the following. List-I List-II a. (q + p) n 1. Poisson distribution b. σ 2 = m 2. Normal distribution c. λ = 1/μ 3. Binomial distribution d. z = x - μ/σ 4. Exponential distribution

Age of applicants of life insurance and the premium of insurance is

Given Mean Standard Deviation X series Y series 18 100 14 40 Coefficient of correlation between X and Y series = +0.8. Find the most probable value of Y if X is 70 and most probable value of X if Y is 90

In this figure, the dark area represents

Which of the following is/are characteristics of poisson distribution?

Binomial distribution developed by

Which of the following is a disadvantage of arithmetic mean?

Given, The above diagram represents

Given the steps of information system 1. Data processing 2. Transaction processing 3. Application processing 4. Information system processing Which is the correct sequence of information system's steps

. . . . . . . . defines the limits above and below the size of the coefficient determined within which, there is an equal chance that coefficient similarly calculated from other samples will fall.

Suppose we want to test the Null hypothesis that the population mean is 300, it is symbolized as

A sample design that permits us to obtain tests and estimation about population parameters is called

Correlation implies that

The basic feature of ERP is/are

Which one of the following statement is false?

Which one of the following indices satisfies both time reversal and factor reversal test

The steps in the development of the conceptual models are

Given a b (a + b) c d (c + d) (a + c) (b + d) N The above table is used for

Match the following. List-I (Moments) List-II (Constants of Binomial Distribution) a. μ 1 1. 0 b. μ 2 2. npq c. μ 3 3. npq (q - p) d. μ 4 4. 3n 2 p 2 q 2 + npq (1 - 6pq)

Given N = 15, $$overline X $$ = 25, $$overline Y $$ = 18, $$sum $$d x 2 = 136, $$sum $$d y 2 = 138, $$sum $$dxdy = 122. There correlation will be

A collection of information through the library reports and the research studies to build up a knowledge base as a information source for decision making is known as

The system processing is at a higher level, over the

If an event has no chance of taking place, probability will be

Which of the following statement is incorrect with regard to questionnaires?

160 heads and 240 tails resulted from 400 tosses of a coin. Find a 95% confidence interval for the probability of a head. Does this appear to be a fair coin?

Average sales of Bata Shoe Co's multiple shops are Rs. 12,500 per month with a standard deviation of Rs. 4050. Find out what proportion of all shops sold between Rs. 12,500 and Rs. 16,550?

If binomial distribution mean is 100 and standard deviation is 4, q will be

A type II error occurs when

If r 12 = 0.9, r 13 = 0.75, r 23 = 0.7, find r 1.23

If r xy = 0.38, r yz = 0.91 and r xz = 0.62. Find the partial correlation between x and y with z as fixed variable.

21 students took a exam. The sample variance is foundto be 80. The examiner claimsthat based on his past experience the true variance has been atleast 100. Does the sample result shows that the population variance significantly less than 100? [Hint $${x^2} = frac{{left( {r - 1}
ight)s}}{{{sigma ^2}}} = frac{{left( {21 - 1}
ight) imes 80}}{{100}} = 16$$ The value of x 2 for 20 df 5% level of significance is 31.4. x 2 value is less than table value.]

A random sample of 15 pairs of values of X and Y from a normal population gives a correlation coefficient of +0.6. Is the correlation in the population significant?

Assumptions of Karl Pearson's co-efficient of correlation includes

Both the regression coefficients cannot be

Z-test is a

Given Sale price of product X Sale price of product Y 1 33 4 27 7 23 9 17 15 15 17 14 25 11 30 6 The above values expressed to the

If A and B are two mutually exclusive events, then probability that either of the two events will appear is the sum of their

Suppose that in key punching of 80 column IBM cards, the mean number of mistakes per card is 0.3. What per cent of cards will have no mistake?

Given, $${sum _y} = {N_a} + b{sum _y}$$ xa0 xa0 the above is a

Validation testing is taken up when the

The decision criterion in which a decision maker selects an alternative that maximises H (criterion of realism) = [a × (maximum in column)] + [(1- a) × (minimum in column)] is called

Probability density function gives the rate at which the . . . . . . . . would accumulate if we were to sweep from left to right on the axis of the value of continuous random variable.

Correlation is said to be linear and non-linear if

Which of the following can be used to determine correlation?

About normal distribution the correct statement is

For t-test the assumptions is

MIS feasibility study does not include . . . . . . . . feasibility.

Yaties correction of continuity is

Which one among the following relates to the probability based sampling technique?

Which of the following statements are true?

A hypothesis that asserts that there is no true differencein the sample and the population in the particular matter under study is termed as

. . . . . . . . errors are made when the test rejects a hypothesis which is true?

Type of information includes

If the stock level ≤ then recorder level, then draw a purchase order of the quantity equal to the

The structured systems analysis develops . . . . . . . . of the system

Decision making using MIS is

A coin is tossed 1000 times and head comes out 550 times. Can the deviation from expected value be due to fluctuations of simple sampling?

Probability is the ratio of favourable events to the . . . . . . . . of equally likely events.

Distributions which are not obtained by actual observations but are reduced mathematically under certain definite hypothesis or assumptions are called

When coefficient of skewness is zero the distribution is

Standard error of mean computed by

Which of the following application does not belong to Poisson distribution

Statements given below are related to analysis of variance. Identify the statements that are true. Statement I The shape of 'F' distribution depends on the number of degrees of freedom in both the numerator and the denominator of the 'F' ratio. Statement II In analysis of variance, sample sizes should be equal. Statement III Analysis of variance may be used to test whether the means of more than two populations are equal.

In a certain field of construction work, the wages are assumed to follow a normal distribution, with an average wage of Rs. 4 per day and a standard deviation of Rs. 0.50. If 20 workers received wages of more than Rs. 4.50 per day, what is the total number of workers?

Attributes of the information includes

If the proportion of defective in a bulk is 4%, find the probability of not more than 2 defectives in a sample of 10, it is known that e -4 = 6703

The functional information is defined as a

Given X value Y value 26 25 19 13 17 7 13 6 9 4 4 1 This is an example of

Which of the following combination is/are correct?

What is the probability of selecting a king from a Pinochle desk?

Rank correlation coefficient is computed by

Spurious relationship between two variables refer to

If, on an average, 'A' completes 40 tasks with a standard deviation of 5, 'B' completes 160 tasks with a standard deviation of 15 and 'C' completes 120 tasks with a standard deviation of 8, their order when arranged on the basis of consistency is

R 1.23 is

Which of the following is/are methods of determining the information requirement?

If a manager takes large sample then he will always obtain

EBC DIC is an

Examples for existent and hypothetical populations are

A train arrives at a commuting station on time on an average of 8 out of 10 days. What is the probability that in a given week of 5 working days, the train will not arrive on time 2 of the 5 days?

Out of 10,000 students in a university, a sample of 400 is taken, the monthly average of the expenditure of these 400 students is found to be Rs. 75 and the standard deviation Rs. 2.50. Set the limits within the average of additional sample would be

Statement I Both the probable error and standard error of the coefficient of correlation are different. Statement II When a sampling distribution of mean is prepared by taking small sized samples from a normally distributed population, the distribution takes the shape of normal distribution.

Under Binomial distribution standard deviation ($$sigma $$) can be computed by

Statement I The product of coefficient of correlation, standard deviation of variable 'X' and Standard deviation of variable 'Y' gives the measure of covariance between X and Y variables. Statement II The product of coefficient of correlation between X and Y variables and the ratio between standard deviation of X variable to standard deviation of Y variable measures the slope of the regression line of X on Y variable.

The following statements relate to sampling distributions. Choose the correct statements being correct or incorrect. Statement I Sampling distribution of mean is normally distributed irrespective of the type of population distribution and size of samples. Statement II The standard deviation of the sampling distribution of mean is less than the standard deviation of the population distribution.

Which one of the following expressions relates to an event which represents the occurrence of either A or B or both?

Match the following List-I (Information's quality) List-II (Elements) a. Impartiality 1. No bias b. Validity 2. Purpose of decision making c. Reliability 3. Accuracy d. Age 4. Old

Probable error is

Questioning, experimentation and . . . . . . . . are the examples of primary method.

Standard error (proportion or difference) may be

Match the following. List-I (Symbols) List-II (Applications) a. r 1. Economic order processing b. $$overline { ext{X}} $$ 2. Mode c. σ 3. Mean d. Z 4. Deviation 5. Correlation

In F-test, S 1 2 and S 2 2 are defined as

Given The above diagram represents a . . . . . . . . problem.

Which one of the following is restricted non-probability based sampling method?

Given, $$sum $$dx dy = 2350, $$sum $$d 2 x = 8250, $$sum $$d 2 y = 724, then r will be

Which of the following point is/are correct about MIS?

Two regression lines closer to each other show

Addition theorem states that if two events A and B are mutually exclusive the probability of occurrence of either A or B is given by

Given 1. One-to-one 2. One-to-many 3. Many-to-many The above relation indicates to the

Binomial distribution was developed by

An experimenter tests the hypothesis that physical exercise helps people's mood (makes them happier). Subjects in the ex perimental group participate on Monday and Tuesday and those in the control an Wednesday and Thursday. What is the extraneous (confounding) variable?

Which of the following measures of central tendency is used when the data changes over a period of time?

Bessel's correction's

Which of the folIowing represents primary data?

Match the following List-I (Types of system) List-II (Elements) a. Data processing 1. Sales b. Transaction 2. Process processing management c. Functional system 3. Focus on computing d. Integrated 4. Transaction execution

Given What will be AB in above diagram as per probability theory?

Suppose that in a box of 80 bulbs packed, the mean number of defects per box is 0.3. What percent of bulbs will have no mistake?

Match the following List-I (Sub-modules of ERP) List-II (Elements) a. Sales 1. Forecasting b. Production 2. Planning c. Materials 3. Purchase d. Finance 4. Cash analysis and Control

If covariance of X and Y is 12.3, variance of X is 16.4 and variance of Y is 13.8, then r will be

The quality of information is governed by the

When one regression coefficient is negative, the other would be

Statement I Exponential probability distribution has the mean = $$frac{1}{mu }$$ and variance = $$frac{1}{{{mu ^2}}}$$ Statement II The mean, median and mode do not coincide in the normal distribution. Statement III The binomial distribution is symmetrical for any value of p (probability of success).

Standard error can be calculated by

Standard error of the difference between the proportions of two variable can be computed by

Which of the following is/are characteristics of Karl Pearson's co-efficient of correlation?

In short time we gather information about population by

Production of MIS includes

Given The above diagram expressed, which model of system?

Size of the binomial distribution depends on

160 heads and 240 tails resulted from 400 tosses of a coin. Find a 95% confidence interval for the probability of a head. Does this appear to be a fair coin? [ Hint p = $$frac{1}{2}$$, q = $$frac{1}{2}$$, n = 400 Expected frequency = np = 200 Standard error = $$sqrt {npq} $$ = 10 Actual difference = 200 - 160 = 40 Difference is greater than 3 times standard error coin is unfair.]

Networks are used for

Match the items of List II with the items of List I and denote the correct matching. List-I List-II a. Testing the goodness of fit of a distribution 1. Z-test b. Testing the significance of the differences among the average performance of more than two sample groups 2. Chi-square test c. Testing the significance of the difference between the average performance of two sample groups (large sired) 3. F-test

If covariance of X and Y is 12.3. Variance of X is 16.4 and variance of Y is 13.8, then r will be $$left[ {{x08f{Hint:}}{ ext{r}} = frac{{{ ext{Covariance x, y}}}}{{sqrt {left( {{ ext{Variance of X}}}
ight) imes left( {{ ext{Variance of Y}}}
ight)} }}}
ight]$$

Which system is defined as a product made up of several applications set in orderly manner to produce a higher level information output different than the output of the application processing

"The concept of a control system model is applied to data processing where all the features are used in the programmes of the data processing." This system is a

Binomial distribution is a discrete probability distribution which expresses probability of one set of dichotomous alternatives known as

The standard deviation of poisson distribution is (m = mean)

Match the following List-I (Probability) List-II (Formula) a. $$Pleft( {A cup B}
ight)$$ 1. $$frac{{Pleft( {A cap B}
ight)}}{{Pleft( B
ight)}}$$ b. $$Pleft( {A/B}
ight)$$ 2. $$Pleft( {B/A}
ight) imes Pleft( A
ight)$$ c. $$Pleft( {B cap A}
ight)$$ 3. $$Pleft( A
ight) + Pleft( B
ight)$$ d. $$Pleft( {B/A}
ight)$$ 4. $$frac{{Pleft( {A cap B}
ight)}}{{Pleft( A
ight)}}$$

Given X = 0.85Y, Y = 0.89X, σ x = 3, r will be

The regression lines cut each other at the point of

How many combinations may be made of 10 things taken 4 at a time?

Probability limit can be

Suppose, it is calculated that 'a' is 4 and 'b' is 2 for a particular estimating line with one independent Variable. If the independent variable has a value of 5, what value should be expected for the dependent variable?

Three numbers an selected at random without replacement from the set of the numbers [1, 2, . . . ., N]. The conditional probability that the third number lies between the first two numbers if the first number is known to be smaller than the second is

Statement I A hypothesis test for comparing the variances of two independent populations with the help of variances of two small samples is known as chi-square test. Statement II To test the hypothesis that the population standard deviation has a specific value on the basis of the values of sample standard deviation of small sized sample, F-test isrelevant.

Given What will be at 'A' point?

The incidence of occupational disease in an industry in such that the workmen have 20% chance of suffering from it. What is the probability that out of 6 workmen 4 or more will contact disease?

When a researcher want to select a representative sample to asses different parameters from a large sized finite heterogeneous population, which one of the following sampling techniques is the most appropriate?

What will be the probability that one is king and other is queen?

Coefficient of quartile deviation is calculated by the formula

Given This is a . . . . . . . . figure.

A bag contains 4 white, 2 black, 3 yellow and 3 red balls. What is the probability of getting a white or red ball at random in a single draw of one?

Frequency distribution includes

t is

Match the following List-I (Outcome State) List-II (Explanation) a. Certainty 1. Multiple outcomes for each alternative can be identified, but there is no knowledge of the probability to be attached to each. b. Risk 2. Complete and accurate knowledge of the outcome of each alternative. There is only one outcome for each alternative. c. Uncertainty 3. Multiple possible outcomes of each alternative can be identified, and a probability of occurrence can be attached to each.

$${chi ^2}$$ computed by

Which statement is/are correct?

The initial implementation due to the technology limitation of distance was the departmental network popularly known as the

The advantages of sampling is

The most important factors causing seasonal variations are

Samples which require respondents to provide the names of additional respondents having similar characteristics. Members of the population who are less known, disliked or whose opinions conflict with the respondent have a low probability of being selected the sampling is

One tailed alternatives are phrased in terms of

The options approved after the technical evaluation are tested on the

In a sample of 400 books 172 were Economics books. Estimate the population proportion at 95% confidence levels

The . . . . . . . . error of correlation is an amount which if added to and subtracted from the average correlation coefficient produces amounts within which the chances are even that a coefficient of correlation from a series error selected at random will fall.

Given X value Y value 5 2 10 7 15 9 21 11 24 15 25 17 30 18 32 21 The above series is an example of

R 1.23 computed by

Given $$sum $$dxdy = 2350, $$sum $$d 2 x = 8250, $$sum $$d 2 y = 724, then r will be

MIS evaluation includes

Probability theory does not include

The density function is a measure of the concentration of probability within

SSAD stands for

Match the items of List-I with the items of List-II and choose the correct answer. List-I List-II a. Mean forecast error 1. Mean of absolute deviations of forecast demands from actual demand values b. Mean absolute deviation 2. Mean of the squares of the deviations of forecast demands from actual demand values c. Mean square error 3. Mean of the deviations of the forecast demands from actual demand d. Mean absolute percent error 4. Mean of the percent deviations of the forecast demands from the actual demand

Match the following. List-I (Degree of Correlation) List-II (Measurement) a. No correlation 1. 0 b. Perfect correlation 2. +1 c. Moderate correlation 3. 0.6 - 0.75 d. Very high correlation 4. 0.9 or more

If the decision process are . . . . . . . ., the information technology choice will weigh in favour of those systems, where the acquisition, processing, analysis and decision making will be at distributed nodel points.

The characteristics of a programming language are

Given $$sum $$dxdy = 186, $$sum $$dx = 11, $$sum $$dy = 7, N = 10, $$sum $$d 2 x = 215, $$sum $$d 2 y = 163. Find out correlation

Regression equation of x on y can be

If μ is equal to 25 then value of mean for exponential probability distribution is

Which one of the following statement is true?

In a random sample of 100 people, 40% of them are non-vegetarian. What proportion of the whole population is non-vegetarian?

Standard error of mean is computed by

The following two statements relate to probability distributions. Choose the correct statements being correct or incorrect. Statement I When 'p' and 'q' are equal in the binomial distribution, the shape of the distribution is perfectly symmetrical irrespective
of the size of 'n'. Statement II The mean and the variance of poisson distribution are not equal.

Given, This is a

The difficulties with errors may be overcome by

The probability that a college student will be graduate is 0.4. What will be the probability that out of 5 students none will graduate?

The level of significance is the probability of committing the

If r 12 = 0.86, r 13 = 0.65 and r 23 = 0.72, prove that r 12.3 = 0.743

DBMS file contains

Which one of the following possibilities leads to Type I error in hypothesis testing?

Consider the following statements relating to correlation and regression analysis. Statement I Correlation is independent of change of scale, but not of origin. Statement II Correlation denotes co-variability between the Variables. Statement III Regression is a relative measure of relationship between Variables. Statement IV Regression is independent of change of origin, but not of scale

When the population size 'N' is very large relative to the sample size 'n', the finite population multiplier takes on value close to

Given A Values B Values 5 3 10 6 15 10 20 15 25 18 30 22 The above series is an example of

Given (Here PC Means Personal Computer) The above network is a

LAN

Presentation of the information is

"The chi-square is an extremely useful type of test instrument and is used to provide a probability basis for testing the variation between sample values and values obtained from a frequency model." Who said this?

"Two or more events are called mutually exclusive, if the occurrence of anyone of them excludes the occurrence of the other." This statement is given by

Match the items of List-I with the items of List-II and indicate the correct matching. List-I List-II a. The parameters of the distribution are n and p 1. Normal distribution b. The mean and the variance of the are identical distribution 2. Exponential distribution c. The mean and the standard deviation of the distribution determines central location and spread respectively 3. Binomial distribution d. The graph of the probability density function of the distribution slopes downward to the right from its maximum mean value 4. Poisson distribution

If the population value follows normal distribution then to have 95% confidence interval for estimate we use

If the decision processes are centralised at a higher level and the . . . . . . . . and authorities is not proper, then the information technology choice will weigh heavily in favour of the distributed data acquisition systems and the centralised high and information processing systems for decision support.

Each day a worker (M) produces 100 goods with a standard deviation of 5, while another worker (N) produces 200 goods with a standard deviation of 15. Which of the following statement is correct?

Given, What will be the point 'B' represent?

Given The above process indicates to

Which of the following statement is true?

There are 'm' number of favourable eases to event A and 'n' are non-favourable eases, both are equally likely and mutally exclusive, the probability of occurring the event A is $$Pleft( A
ight) = frac{m}{{m + n}}.$$ xa0 This formula corresponds to which one of the following approaches to probability?

Interviewing all members of a given population is called

Twenty-one students took a management course examination. The sample variance is found to be 80. The teacher claims that based on his past experience the true variance has been at least 100. Does the sample result show that the population variance significantly less than 100?

Secondary data cannot help in

In which one of the following probability distributions, the mean value of the distribution is the sole parameter of the distribution?

If r xy = 0.38, r xz = 0.62 and r yz = 0.91. Find the partial correlation between x and y with z held fixed

Match the following List-I (Types of Network Topology) List-II (Connection) a. Bus 1. Connected through one cable b. Star 2. Connected through central system c. Ring 3. Connected with cable layout d. LAN 4. Within department

All causes non-sampling errors except

If the variables are independent, r is zero and the lines of regression are at

The . . . . . . . . of r (correlation) is an amount which if added to and subtracted from the average correlation co-efficient produces amounts within which the chances are even that a co-efficient of correlation from a series error selected at random will fall

Given This is a . . . . . . . . problem.

Which one is not the type of utility of information

Given X Y 5 37 7 31 10 20 15 15 20 10 28 5 The above series is an example of

In case of conditional probability, (A and B) =

Which of the following is/are tools of the decision support system?

The information technology choice is a

If both the regression coefficients are negative, the correlation coefficient would be

The DBMS is a

If all values of a variable are multiplied by a given number, which one of the following will not be affected?

A company makes electric toys. The probability that an electric toy is defective is 0.01. What is the probability that a shipment of 300 toys will contain exactly 5 defectives?

The emperical formulae of ceritral measure of tendency is

Which of the following statements relating to correlation and reegression are true? 1. The coefficient of correlation is independent of change of origin and scale 2. The coefficient of correlation between the two variables is the arithmetic average of the two regression coefficients 3. The probable error of the coefficient correlation is 0.6745 times of its standard error 4. Coefficient of correlation multiplied by the ratio between the standard deviations of the two variables denotes the slope of the regression line Select the correct answer:

X 1 2 and X 2 2 are independently distributed with n 1 and n 2 d.f. then (X 1 2 /n 1 )/(X 2 2 /n 2 ) is distributed as

Under binomial distribution, $$overline X $$ can be computed by

The quality of the parameters is assured if

Standard deviation can be calculated by

The information system development cycle for a new application consists of the

ERP Model is/are

Statement I The mean of the sampling distribution of mean is equal to the parameter value of the population mean. Statement II Stratified sampling technique is unrestricted probability (random) sampling technique.

Which one of the following statement is correct?

Statement I When a null hypothesis is true but as per the hypothesis testing, it is rejected

it is known as Type II error in hypothesis testing. Statement II For testing the significance of the differences among the performance of more than two sample groups when the data are non-parametric, Kruskal-Wallis (H) test is appropriate.

The . . . . . . . . that one of the several mutually exclusive events X 1 , X 2 , X 3 , . . . . . . . . , X n
shall happen is the sum of the probabilities of the individual events.