Business Statistics and Research Methods MCQs

Question 1

The mean of the frequency distribution of the economics marks of 100 students is 20. It was later found that the number 23 was misread as 25. What will be the correct mean?

Accepted Answer

19.98

Answer

1.998

Answer

1998

Answer

1999.8

Question 2

Consider the following statements. Assertion (A): The expected values should be at least 5 to apply the chi-square test. Reason (R): The chi-square distribution provides an adequate approximation of the sampling distribution. Indicate the correct answer from the following:

Accepted Answer

Both (A) and (R) are true, and (R) is the right explanation

Answer

Both (A) and (R) are true, but (R) is not the correct explanation

Answer

(A) is true, but (R) is false

Answer

(A) is false, but (R) is true

Question 3

Hostorically the first index was constructed in . . . . . . . .

Accepted Answer

1764

Answer

1844

Answer

1850

Answer

1744

Question 4

Which of the following are true for report writing under statistics? 1. A description explanation or development of the methodology tube used. 2. Analysis should be full scale analysis. 3. In the subsection containing the actual analysis it is important that you describe your analysis sufficiently clearly.

Accepted Answer

All of these

Answer

Both 1 and 2

Answer

Both 2 and 3

Answer

Both 1 and 3

Question 5

Size of the sample is determined in terms of

Accepted Answer

Both A and B

Answer

the margin of error permissible in the estimate

Answer

the confidence coefficient with, which we want the estimate to be within the margin of error

Answer

Neither A nor B

Question 6

This is not the purpose of tabulation

Accepted Answer

Editing the data

Answer

Explaining the nature of the data

Answer

Simplifying the data

Answer

Simplifying the comparison

Question 7

Assertion (A) Median of a distribution is that value of the variant which divides it in two equal parts. Reason (R) Median is a positional average.

Accepted Answer

Both (A) and (R) are true

Answer

Both (A) and (R) are true, but (R) is not the correct explanation of (A)

Answer

Both (A) and (R) are false

Answer

(A) is true, but (R) is false

Question 8

What is/are the main benefits of degrees of freedom (DoF) in small tests?

Accepted Answer

All of the above

Answer

A higher degree of freedom means more power to reject a false null hypothesis and find a significant result

Answer

Degrees of Freedom is an essential idea that appears in many contexts throughout statistics including hypothesis tests, probability distributions, and regression analysis

Answer

Degrees of Freedom indicate the number of independent values that can vary in an analysis without breaking any constraints

Question 9

. . . . . . . . is a true measure of dispersion.

Accepted Answer

None of these

Answer

Range

Answer

Mean deviation

Answer

Inter-quartile range