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

A. Skewed to the right

B. Symmetric

C. Skewed to the left

D. Neither symmetric nor skewed

A. Type I

B. Type II

C. Both A and B

D. None of these

A. Range

B. Quartile deviation

C. Mean deviation

D. Standard deviation

A. 0.45

B. 0.045

C. 0.05

D. 0.5

A. $$\frac{{{\theta _3} + {\theta _1}}}{4}$$

B. $$\frac{{{\theta _3} + {\theta _1}}}{2}$$

C. $$\frac{{{\theta _3} - {\theta _1}}}{{{\theta _3} + {\theta _1}}}$$

D. $$\frac{{{\theta _3} + {\theta _1}}}{{{\theta _3} - {\theta _1}}}$$

A. no correlation

B. perfect correlation

C. negligible correlation

D. none of these

A. 4745

B. 4292

C. 8034

D. 8386

A. A statistic is a piece of data from a portion of a population

B. A parameter is data from a census

C. A census surveys everyone

D. All of the above

A. The standard deviation of a constant is equal to unity

B. The sum of absolute deviations is minimum if these deviations are taken from the mean

C. The second moment about origin equals variance

D. The variance is positive quantity and is expressed in square of the units of the observations

A. Both correlation and regression co-efficients have same sign

B. Arithmetic mean of the regression co-efficients is always more than the correlation co-efficient

C. Regression co-efficients are independent of both the origin and scale

D. Correlation co-efficient is the square root of two regression co-efficients