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-8 section-9

Which of the following is not a correct statement about a probability?

A) It must have a value between 0 and 1 B) It can be reported as a decimal or a fraction C) A value near 0 means that the event is not likely to occur/happens D) It is the collection of several experiments

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Answer & Solution

Answer: Option D

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If for a given data, mode = 5, median = 15 and mean = 20, it means that the sample data is-

A) skewed to the right B) skewed to the left C) symmetric D) neigher symmetric nor skewed

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Answer: Option A

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Assertion (A) If a random sample of 'n' observations is taken from a binomial population with parameter as p, the sampling distributions will be a standard deviation which is normally distributed.
Reason (R) Standard deviation of binomial distribution $$\sigma P = \sqrt {\frac{{pq}}{n}} ,$$ where q = 1 - p

A) (A) is true, but (R) is false B) (A) is false, but (R) is true C) Both are false D) Both are true

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Answer: Option B

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In a frequency distribution, Bowley's coefficient of skewness is 0.6, if the sum of two quartiles is 100 and median is 38, the value of third quartile will be

A) 70 B) 30 C) 60 D) 40

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Answer: Option A

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Which one of the following formulae is used to calculate probable error of correlation coincident between two variables of 'n' pairs of observations?

A) $$0.6745\left[ {\frac{{1 - {r^2}}}{{\sqrt n }}} \right]$$ B) $$0.5758\left[ {\frac{{1 - {r^2}}}{{\sqrt n }}} \right]$$ C) $$0.675\left[ {\frac{{1 - {r^2}}}{n}} \right]$$ D) $$0.5758\left[ {\frac{{1 - {r^2}}}{n}} \right]$$

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Answer: Option A

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If the third moment about mean is zero, then the distribution is:

A) Positively skewed B) Negatively skewed C) Symmetrical D) Mesokurtic

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Answer: Option C

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In which approach to probability the outcomes are equally likely to occur?

A) Classical Probability B) Subjective Probability C) Relative Frequency D) Independent

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Answer: Option A

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The mean deviation is minimal-

A) from the mean B) from the median C) from the mode D) from 1^st quartile

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Answer: Option B

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In case of . . . . . . . . distribution mean, median, mode coincide.

A) symmetrical B) asymmetrical C) moderately asymmetrical D) None of the above

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Answer: Option A

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According to central limit theorem, if the sample size increases, distribution is said to be . . . . . . . .

A) binomial distribution B) normal distribution C) posian distribution D) None of these

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Answer: Option B

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