Business Statistics And Research Methods - Practice Test

[#376] The inter quartile range:

(A) Relieson four values, and therefore, does not provide a measure of dispersion

(B) Can be calculated by subtracting the median from the fourth quartile

(C) Is normally used when the measure of central tendency is the mode

(D) Is representative of the middle 50% of values in the data set

Correct Answer

(D) Is representative of the middle 50% of values in the data set

[#377] The relationship between expenditure in Rs. on advertising (X) in one time period and sales in Rs. (Y) in the next period has been found to be Y = 50 + 7X. Which of the following interprets the value 7 correctly?

(A) For every Rs. 1 spent on advertising, sales increase by Rs. 7 on average

(B) For every Rs. 1 increase in sales, Rs. 7 must on average be spent on advertising

(C) For every Rs. 1 spent on advertising, sales increase by Rs. 8

(D) When advertising is zero, sales are Rs. 50/7

Correct Answer

(A) For every Rs. 1 spent on advertising, sales increase by Rs. 7 on average

[#378] Which of the following statement/s is/are true?

(A) Descriptive statistics summarize the characteristics of a data set

(B) Inferential statistics allow you to test a hypothesis or assess whether your data is generalizable to the broader population

(C) Correlational statistics provide a description of the sample or population for their further analyses to explore the significance of their differences

(D) All of the above

Correct Answer

(C) Correlational statistics provide a description of the sample or population for their further analyses to explore the significance of their differences

[#379] In a series, the sum of all the observations is . . . . . . . . times the arithmetic mean.

(A) 2

(B) mean itself

(C) 5

(D) None of these

Correct Answer

(D) None of these

[#380] According to classical approach, if an experiment has 'n' simple outcome, each outcome will have probability equal to

(A) n

(B) $$frac{1}{n}$$

(C) $$frac{1}{{{n^2}}}$$

(D) None of these

Correct Answer

(B) $$frac{1}{n}$$

Business Statistics And Research Methods - Study Mode

[#376] The inter quartile range:

Correct Answer

[#377] The relationship between expenditure in Rs. on advertising (X) in one time period and sales in Rs. (Y) in the next period has been found to be Y = 50 + 7X. Which of the following interprets the value 7 correctly?

Correct Answer

[#378] Which of the following statement/s is/are true?

Correct Answer

[#379] In a series, the sum of all the observations is . . . . . . . . times the arithmetic mean.

Correct Answer

[#380] According to classical approach, if an experiment has 'n' simple outcome, each outcome will have probability equal to

Correct Answer