Business Statistics and Research Methods MCQs

Question 1

For a symmetrical distribution:

Accepted Answer

β1 = 0

Answer

β1 > 0

Answer

β1 < 0

Answer

β1 = 3

Question 2

The formula to find the mode with the help of median and arithmetic mean is

Accepted Answer

$$Z = 3M - \overline {2X} $$

Answer

$$Z = 2M - \overline X $$

Answer

$$Z = 4M - \overline X $$

Answer

$$Z = M - \overline {4X} $$

Question 3

In the case of an algebraic model for a straight line, if a value for the x variable is specified, then:

Accepted Answer

the exact value of the response variable can be computed

Answer

the computed response to the independent value will always give a minimal residual

Answer

the computed value of y will always be the best estimate of the mean response

Answer

none of these alternatives is correct

Question 4

Which of the following are NOT the sources of secondary data? 1. Interview 2. Questionnaire 3. Observation 4. Unpublished thesis 5. Annual report Choose the correct option from the following:

Accepted Answer

1, 2 and 3

Answer

1, 4 and 5

Answer

2, 3 and 4

Answer

3, 4 and 5

Question 5

Variance of random variable X of γ (gamma) distribution can be calculated as

Accepted Answer

var(x) = 2n/μp2

Answer

var(x) = n - 2/μp3

Answer

var(x) = xn/μp2

Answer

var(x) = n + 2/μp2

Question 6

Assertion (A) Parametric test are applied initially. Reason (R) Non-parametric test are much less cumbersome to use and easy to compute.

Accepted Answer

Both (A) and (R) are correct

Answer

Both (A) and (R) are true, but (R) is the correct explanation of (A)

Answer

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

Answer

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

Question 7

What is the probability that sum of outcomes on pair of dice is equal to 8?

Accepted Answer

$$\frac{5}{{36}}$$

Answer

$$\frac{6}{{36}}$$

Answer

$$\frac{4}{{36}}$$

Answer

$$\frac{3}{{36}}$$

Question 8

Sampling error . . . . . . . . with increase in sampling size while non-sampling error . . . . . . . . with increase in sample size.

Accepted Answer

increase, decrease

Answer

decrease, increase

Answer

decrease, decrease

Answer

increase, increase

Question 9

Which of the following is used to compare two or more frequency distribution?

Accepted Answer

None of the above

Answer

Frequency polygon

Answer

Histogram

Answer

Cumulative frequency curves (ogives)