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

A. P(a) > P(b)

B. P(A) ≥ P(B)

C. P(B) = P(A)

D. P(B) = P(B)

A. Median

B. Arithmetic mean

C. Geometric mean

D. None of these

A. (X + Z - α SEM)

B. (X - Z - α SEM)

C. (X ± Z - α SEM)

D. None of these

A. σ²/n

B. σ/n

C. n/σ²

D. None of these

A. type I error

B. type II error

C. alternative hypothesis

D. None of these

A. critical region

B. rejection region

C. Either A or B

D. None of these

A. 15

B. 30

C. 20

D. 40

A. Coefficient of determination is the squares of correlation coefficient

B. Coefficient of determination is the square root of correlation coefficient

C. Both are equal

D. Both are unrelated

A. $$\frac{{{\text{Covariance of X and Y}}}}{{{\text{Var}}{\text{.}}\left( {\text{X}} \right)\,{\text{Var}}{\text{.}}\left( {\text{Y}} \right)}}$$

B. $$\frac{{{\text{Covariance of X and Y}}}}{{\sqrt {{\text{Var}}{\text{.}}\left( {\text{X}} \right)\,{\text{Var}}{\text{.}}\left( {\text{Y}} \right)} }}$$

C. $$\frac{{{\text{Var}}{\text{.}}\left( {\text{X}} \right)\,{\text{Var}}{\text{.}}\left( {\text{Y}} \right)}}{{\sqrt {{\text{Covariance of X and Y}}} }}$$

D. $$\frac{{{\text{Var}}{\text{.}}\left( {\text{X}} \right)\,{\text{Var}}{\text{.}}\left( {\text{Y}} \right)}}{{{\text{Covariance of X and Y}}}}$$

A. 1, 2 and 4

B. 1, 3 and 4

C. 1, 2 and 3

D. 1, 2, 3 and 4