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

A. Coefficient of variation

B. Coefficient of dispersion

C. Standard deviation

D. Coefficient of skewness

A. Positive

B. Negative

C. Zero

D. None of the these

A. Mean, median and mode always coincide

B. Within ±1.96σ limits from mean value, the area under the distribution is 99% of the total area

C. The area under the normal curve represents probabilities for the normal random variable and the total area for the normal probability distribution is one

D. For every pair of values of mean and standard deviation, the curve of the distribution is bell-shaped and symmetric

A. 8

B. 5

C. 6

D. 6.5

A. Facts

B. Tests

C. Personal prejudices

D. Experiments

A. r_n

B. r

C. r_c

D. r_k

A. (1) → (2) → (4) → (3)

B. (3) → (2) → (1) → (4)

C. (3) → (3) → (4) → (1)

D. (2) → (1) → (4) → (3)

A. value that has the highest probability of occurring

B. mean value over an infinite number of observations of the variable

C. largest value that will everoccur

D. most common value over an infinite number of observations of the variable

A. the mean and variance of the distribution are the same (equal)

B. the probability of success is alwaysgreater than 5

C. the number of trials is always less than 5

D. it always contains a contingency table

A. $$\frac{{\sum {{\left( {Y - \overline Y } \right)}^2}}}{N}$$

B. $$\frac{{\sum {{\left( {Y - {Y_c}} \right)}^2}}}{N}$$

C. $$\sqrt {\frac{{\sum {{\left( {Y - {Y_c}} \right)}^2}}}{N}} $$

D. $$\sqrt {\frac{{\sum {{\left( {Y - \overline Y } \right)}^2}}}{N}} $$