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-2 section-1

The under root of two . . . . . . . . coefficients gives us the value of correlation coefficients.

A) Regression B) S. E. C) S. D. D) None of them

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Answer: Option A

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Among the following choose the most suitable 'test' that can be applied to examine the influence of one factor on different groups.

A) 'T' test B) 'F' test C) 'Chi-square' test D) None of these

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Answer: Option B

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Consider the following statement and identify the wrong statements.
Statement I: Accepting null hypothesis, when it is false, is called a level of significance.
Statement II: $$1 - \alpha $$ is called power of a test.
Statement III: Critical value of $$Z$$ - static for two-tailed test at 5% level of significance is 1.96.

A) Statements I, II and III B) Statements I and III C) Statements II and III D) Statements I and II

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Answer: Option D

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In case of conditional probability (A and B) = ?

A) P(B) × P(A/B) B) P(B) × P(A) C) P(A) + P(B) D) None of these

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Answer: Option A

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In a predominantly illiterate area consisting of 10,000 population, data has to be collected from 10% of them. The appropriate technique for data collection would be

A) Questionnaire B) Schedule C) Interview D) All the above

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Answer: Option C

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Which one of the following formulas is used to calculate the standard error of coefficient of correlation between 25 paired observations of a sample?

A) $$\frac{{\left( {1 - {r^2}} \right)}}{{\sqrt n }}$$ B) $$\sqrt {\frac{{\left( {1 - {r^2}} \right)}}{{\left( {n - 2} \right)}}} $$ C) $$0.6745\left( {\frac{{1 - {r^2}}}{{\sqrt n }}} \right)$$ D) $$\sqrt {\frac{{\left( {n - 2} \right)}}{{\left( {1 - {r^2}} \right)}}} $$

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Answer: Option A

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Which of the following is not a condition of the binomial distribution?

A) Only 2 possible outcomes B) Have a constant probability of success C) Must have at least 3 trials D) Trials must be independent

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Answer: Option C

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Which one of the following is a false description?

A) In a moderately asymmetrical distribution, the empirical relationship between mean, mode and median suggested by Karl Pearson is Mean - Mode = 3 (Mean - Median) B) Coefficient of variation is an absolute measure of dispersion C) Measure of skewness indicates the direction and extent of skewness in the distribution of numerical values in the data set D) Kurtosis refers to the degree of flatness or peakedness in the region around the mode of a frequency curve

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Answer: Option B

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The Learner Index measures

A) Market power B) Price C) Price-Marginal cost D) None of the above

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Answer: Option A

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The second moment about mean is

A) $$\frac{{\sum {{{\left( {x - \overline x } \right)}^2}} }}{N}$$ B) $$\frac{{{{\left( {x - \overline x } \right)}^3}}}{N}$$ C) $$\frac{{{{\left( {x - \overline x } \right)}^2}}}{N}$$ D) None of these

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Answer: Option A

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