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-4

Which of the following relating to normal distribution are not correct?
(i) Co-efficient of skewness is three.
(ii) It is mesokurtic.
(iii) Mean deviation for it is $$\frac{2}{3}$$σ.
(iv) µ ± 2σ covers 94.45% area.
(v) Mean, median and mode are equal.
(vi) The standard normal variate z has mean one and SD zero.

A) (i), (iii) and (vi) B) (iii), (iv) and (v) C) (i), (iii) and (v) D) (i), (iii) and (iv)

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Answer & Solution

Answer: Option A

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If A is a perfect subset of B and P(a < Pb), then P(B - A) is equal to:

A) P(a)/P(b) B) P(a) × P(b) C) P(a) + P(b) D) P(b) - P(a)

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Answer & Solution

Answer: Option D

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The income of 5 persons are as follows

Person	Income per month (Rs.)
Ram	1,500
Shyam	1,700
Mohan	2,000
Aryan	5,000
Krishna	6,000

Types of above series . . . . . . . .

A) individual series B) discrete series C) continuous series D) time series

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Answer & Solution

Answer: Option A

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Under binomial distribution, a random experiment performed repeatedly . . . . . . . . and . . . . . . . . number of times.

A) infinite, fixed B) finite, fixed C) infinite, variable D) finite, variable

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Answer & Solution

Answer: Option B

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Classification of the students of a college in two categories 'rural' and 'urban' is called

A) Qualitative classification B) Quantitative classification C) Geographical classification D) None of these

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Answer & Solution

Answer: Option A

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The correlation coefficient will have a positive sign when

A) X is increasing and Y is decreasing B) Both X and Y are increasing C) X is decreasing and Y is increasing D) There is not change in the values of X and Y

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Answer & Solution

Answer: Option B

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In a moderately asymmetrical distribution, the mode and mean are 42 and 40, respectively. The median is

A) 39 B) 40.67 C) 38 D) 41.02

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Answer & Solution

Answer: Option B

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The coefficient of correlation:

A) is the square of the coefficient of determination B) is the square root of the coefficient of determination C) is the same as r-square D) can never be negative

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Answer & Solution

Answer: Option B

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If the coefficient of determination is equal to 1, then the correlation coefficient:

A) must also be equal to 1 B) can be either -1 or +1 C) can be any value between -1 to +1 D) must be -1

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Answer & Solution

Answer: Option B

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Statistics means

A) Data only B) Statistical method only C) Both of the above D) None of the above

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Answer & Solution

Answer: Option C

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