Business Statistics and Research Methods MCQ Questions and Solutions with Explanations | Commerce

A. covariance between two variables

B. product of their standard deviation

C. square root of the product of two regression coefficient

D. None of the above

A. arithmetic mean of Laspeyre's & Paasche's index

B. median of Laspeyre's & Paasche's index

C. geometric mean of Laspeyre's & Paasche's index

D. None of the above

A. Arithmetic mean

B. Geometric mean

C. Weighted arithmetic mean

D. None of the above

A. Less than the median

B. Less than the mode

C. Greater than the mode

D. Difficult to tell

A. the population is widely dispersed geographically

B. you have limited time and money available for travelling

C. you want to use a probability sample in order to generalise the results

D. all of the above

A. Both 1 and 2

B. Both 2 and 3

C. Only 2

D. Only 3

A. arithmetic mean

B. mean deviation

C. standard deviation

D. quartile deviation

A. P(A) < P(B)

B. P(B) ≥ P(A)

C. P(A) = P(B)

D. P(A) ≥ P(B)

A. $$m = Z_{1 - \frac{\alpha }{2}}^2.\frac{\sigma }{{\sqrt n }}$$

B. $$m = Z_{1 - \frac{\alpha }{2}}^2.\frac{{{\sigma ^2}}}{{\sqrt n }}$$

C. $$m = Z_{1 - \frac{\alpha }{2}}^2.\frac{\sigma }{n}$$

D. $$m = {z_{1 - \frac{\alpha }{2}}}.\frac{\sigma }{{\sqrt n }}$$

A. $${\left[ {\frac{{n + 1}}{2}} \right]^{{\text{th}}}}{\text{value}}$$

B. $${\left[ {\frac{n}{2}} \right]^{{\text{th}}}}{\text{value}}$$

C. $${5^{{\text{th}}}}{\text{ value}}$$

D. $${\left[ {\frac{{n + 1}}{4}} \right]^{{\text{th}}}}{\text{value}}$$