Business Statistics And Research Methods - Study Mode

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[#946] Calculation of arithmetic mean by short-cut and step-deviation method is based on assumed mean, which is taken/selected from

(A) given independent variable

(B) given frequency distribution

(C) estimated cumulative frequency distribution

(D) None of the above

Correct Answer

(A) given independent variable

[#947] Match List-I with List-II : List-I List-II a. $$j = frac{{overline X - {M_Q}}}{sigma }$$ 1. Kelly's coefficient of skewness b. $$j = frac{{{Q_3} - {Q_1} - 2{M_Q}}}{{{Q_3} - {Q_1}}}$$ 2. Bowley's measure of skewness c. $$j = frac{{{P_{90}} + {P_{10}} - 2{P_{50}}}}{{{P_{90}} - {P_{10}}}}$$ 3. Karl Pearson's coefficient of skewness Choose the correct option from those given below:

(A) a-3, b-2, c-1

(B) a-3, b-1, c-2

(C) a-1, b-2, c-3

(D) a-2, b-1, c-3

Correct Answer

(A) a-3, b-2, c-1

[#948] For the discrete variables, more suitable class intervals are

(A) exclusive

(B) inclusive

(C) Both A and B

(D) None of these

Correct Answer

(B) inclusive

[#949] Match the items in List-I with items in List-II . List-I List-II a. Level of significance 1. Sample mean is equal to population mean b. Standard deviation of sampling distribution 2. Parameters c. Numerical value that describes the characteristics of the population 3. Type-I error d. Normally-distributed population 4. Standard error

(A) a-4, b-3, c-1, d-2

(B) a-3, b-4, c-2, d-1

(C) a-3, b-2, c-4, d-1

(D) a-4, b-2, c-3, d-1

Correct Answer

(B) a-3, b-4, c-2, d-1

[#950] Match the following. List-I List-II a. Fisher 1. Inverse probability b. Karl Pearson 2. Normal distribution c. Thomas Baye's 3. Correlation coefficient d. Kari Gaus 4. Index number

(A) a-4, b-3, c-2, d-1

(B) a-4, b-3, c-1, d-2

(C) a-4, b-2, c-3, d-1

(D) a-4, b-2, c-1, d-3

Correct Answer

(B) a-4, b-3, c-1, d-2