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-1 section-5

Which of the following is not a restricted random sampling technique?

A) Stratified sampling B) Simple random sampling C) Systematic sampling D) Multi-stage sampling

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Answer & Solution

Answer: Option B

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If 'p', 'g' and 'n' are probability of success, failure and number of trials respectively in a Binomial Distribution, what is its Standard Deviation?

A) $$\sqrt {np} $$ B) $$\sqrt {pq} $$ C) $${\left( {np} \right)^2}$$ D) $$\sqrt {npq} $$

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Answer & Solution

Answer: Option D

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Arrange the following steps in sequence in constructing a frequency distribution.
1. The classes should be clearly defined and each observations should be included in only one of class interval.
2. Check that the number of classes should neither be too large nor too small.
3. Check that all class intervals are of same width.
4. List the value of the variable in different class interval.
Select the correct answer using the options given below

A) 1, 3, 2, 4 B) 1, 2, 3, 4 C) 1, 4, 3, 2 D) 2, 1, 3, 4

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Answer & Solution

Answer: Option A

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In calculating the regression equation linking two variables, the standard formulae for the regression coefficients are given in terms of X and Y. Which of the following is true?

A) X must be the variable which will be forecast B) It does not matter which variable is which C) Y must be the dependent variable D) Y must be the variable shown on the vertical axis of a scatter graph

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Answer & Solution

Answer: Option C

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In a questionnaire, how many answers should be there for simple alternative questions?

A) Three B) Two C) No D) Many

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Answer & Solution

Answer: Option B

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The null hypothesis of Kruskal-Wallis test is that the mean ranks of the groups are the same. The expected mean rank depends upon

A) $$\frac{n}{2}$$ B) $$\frac{n}{4}$$ C) $$\frac{{n + 1}}{4}$$ D) $$\frac{{n + 1}}{2}$$

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Answer & Solution

Answer: Option D

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Find the value of x² (chi-square) for the following information.

Class	A	B	C	D	E
Observed Frequency	8	29	44	15	4
Expected Frequency	7	24	38	24	7

A) 6.06 approx B) 6.76 approx C) 7.02 approx D) 5.05 approx

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Answer & Solution

Answer: Option B

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The portion of the total area covered in a normal curve under $$\overline x \pm 2.54\sigma $$ is

A) 85% B) 95% C) 99% D) 90%

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Answer & Solution

Answer: Option C

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Not rejecting null hypothesis, when it is infact false is

A) type I error B) type II error C) two tailed error D) None of the above

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Answer & Solution

Answer: Option B

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Choose the most appropriate answer:
First hand data collected afresh for the purpose of statistical investigation is called:

A) Skewed Data B) Symmetric Data C) Primary Data D) Statistical Data E) Secondary Data

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Answer & Solution

Answer: Option C

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