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

A. $$1 - \frac{{\left[ {6\sum {D^2} + \frac{1}{2}\left( {{m^2} - m} \right) + \frac{1}{2}\left( {{m^2} - m} \right) + .....} \right]}}{{{N^3} - N}}$$

B. $$1 - \frac{{6\left[ {\sum {D^2} + \frac{1}{{12}}\left( {{m^3} - {m_1}} \right) + \frac{1}{{12}}\left( {{m^3} - {m_2}} \right) + .....} \right]}}{{{N^3} - N}}$$

C. $$1 - \frac{{\frac{1}{2}\left[ {\left( {{m^3} - m} \right) + \frac{1}{2}\left( {{m^3} - m} \right) + .....} \right]}}{{{N^3} - N}}$$

D. None of the above

A. P₉₀ - P₁₀

B. P₅₀ - P₃₀

C. P₇₅ - P₂₅

D. None of these

A. Mean > Mode > Median

B. Mean < Median < Mode

C. Mean > Median > Mode

D. Mean = Mode = Median

A. Constant

B. Flatness

C. Variation

D. Skewness

A. $$1 - \frac{{\sum {D^2}}}{{{N^3} - N}}$$

B. $$\frac{{6\sum {D^2}}}{{N\left( {{N^3} - N} \right)}}$$

C. $$1 - \frac{{6\sum {D^2}}}{{N\left( {{N^2} - 1} \right)}}$$

D. $$1 + \frac{{6\sum {D^2}}}{{N\left( {{N^3} - N} \right)}}$$

A. a-1, b-2, c-3, d-4

B. a-3, b-4, c-1, d-2

C. a-3, b-2, c-1, d-4

D. a-2, b-1, c-3, d-4

A. 1.96

B. 2.32

C. 1.645

D. 2.5758

A. A, B and C

B. C, B and A

C. B, A and C

D. C, A and B

A. The expected value of the error term is one

B. The variance of the error term is the same for all values of x

C. The values of the error term are independent

D. The error term is normally distributed

A. Mean > Median > Mode

B. Mean < Median > Mode

C. Mean = Median = Mode

D. Mean > Median < Mode