Business Statistics and Research Methods MCQ Questions and Solutions with Explanations

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

Business Statistics and Research Methods MCQ Questions and answers with easy and logical explanations. Commerce provides you all type of quantitative and competitive aptitude mcq questions with easy and logical explanations. Business Statistics and Research Methods MCQ is important for exams like B.COM, M.COM, BBA, BBM, CA, CS, CMA, CPA, CFA, UPSC, NET, Banking and other commerce department exam. Page-5 section-8

Regression coefficient of x on y will be:

A) $$\frac{{\sigma y}}{{\sigma x}}$$ B) $$r{\left( {\frac{{\sigma x}}{{\sigma y}}} \right)^2}$$ C) $$r{\left( {\frac{{\sigma y}}{{\sigma x}}} \right)^2}$$ D) $$r\frac{{\sigma x}}{{\sigma y}}$$

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Answer & Solution

Answer: Option D

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The formula to find the mid point of a class is

A) $${L_1} + {L_2}$$ B) $${L_1} - {L_2}$$ C) $$\frac{{{L_1} + {L_2}}}{2}$$ D) $$\frac{{{L_1} - {L_2}}}{2}$$

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Answer: Option C

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How will the arithmetic mean be affected by adding a constant 'b' to every item?

A) $$\overline X + b$$ B) $$\overline X - b$$ C) $$\frac{{\overline X }}{b}$$ D) None of these

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Answer: Option A

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When the population mean is either lower or higher than some hypothesised value . . . . . . . . Is considered to be appropriate.

A) one tailed test B) two tailed test C) Both A and B D) None of these

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Answer: Option A

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If the Karl Pearson coefficient of correlation between x and y is 0.3, then the coefficient of correlation between -x and 2y is

A) -0.6 B) -0.3 C) 0.3 D) 0.5

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Answer: Option C

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'Statistics is the science of Counting.' Whose statement is this?

A) Bowley B) King C) Seligman D) None of these

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Answer & Solution

Answer: Option A

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Which of these reports provide information without any evaluation?

A) Informational B) Interpretative C) Routine D) Progress

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Answer: Option A

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Which one of the following is not a formula of standard deviation $$\left( \sigma \right)?$$

A) $$\sigma = \frac{1}{N}\sqrt {\frac{{\sum {d^2}x}}{N} - {{\left( {\frac{{\sum dx}}{N}} \right)}^2}} $$ B) $$\sigma = \frac{1}{N}\sqrt {\sum {d^2}x - {{\left( {\sum dx} \right)}^2}} $$ C) $$\sigma = \sqrt {\frac{{\sum {d^2}x}}{N} - {{\left( {\overline x - A} \right)}^2}} $$ D) $$\sigma = \sqrt {\frac{{\sum {d^2}x - N{{\left( {\overline x - A} \right)}^2}}}{N}} $$

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Answer & Solution

Answer: Option B

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If one regression coefficient is greater than one, then other will be:

A) More than one B) Equal to one C) Less than one D) Equal to minus one

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Answer: Option C

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When there is either perfect positive correlation and either perfect negative correlation between the two variables the two regression lines will . . . . . . . .

A) overlap B) coincide C) Both A and B D) None of these

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Answer & Solution

Answer: Option B

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