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-9

At 5% significance level, we are . . . . . . . . confident of the correctness of the decision.

A) 95% B) 50% C) 99% D) 10%

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Answer & Solution

Answer: Option A

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Biased error, a type of sampling error, may arise due to

A) faulty selection of sample B) faulty work during the collection C) faulty methods of analysis D) All of the above

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Answer: Option D

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Sampling distribution of mean is very close to the standard normal distribution when:

A) population is normally distributed B) population is not normally distributed, but sample size is large C) Both A and B D) Neither A nor B

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Answer & Solution

Answer: Option C

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If the regression coefficients are -0.8 and -0.2 then the value of correlation coefficient will be:

A) -0.4 B) +0.4 C) -0.16 D) +0.16

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Answer & Solution

Answer: Option A

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Under. . . . . . . ., only the first unit of the sample is selected at random and the remaining units are selected at fixed intervals.

A) systematic sampling B) multi-stage sampling C) sequential sampling D) cluster sampling

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Answer & Solution

Answer: Option C

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The formula to determine the number of classes given by Sturge's Rule is which one of the following?
Where: K = Number of classes; N = Total number of observations
Logarithm of the total number of observations

A) K = 1 + 3.322 (log N) B) K = (log N) 1.322 C) $$K = \frac{{1 + 3.322}}{{\left( {{\text{Log }}N} \right)}}$$ D) $$K = \frac{{3.322}}{{\left( {{\text{Log }}N} \right) + 1}}$$

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Answer & Solution

Answer: Option A

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The objects of statistical investigation are decided

A) after the compilation of data B) before the compilation of data C) during the compilation of data D) none of the above

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Answer & Solution

Answer: Option B

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Sampling is simply the process of learning about the 'population' on the basis of a part of the universe or population called . . . . . . . . drawn from it.

A) parameters B) statistics C) sample D) None of these

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Answer: Option A

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In regression analysis, the variable that is used to explain the change in the outcome of an experiment, or some natural process, is called:

A) the x-variable B) the independent variable C) the predictor variable D) all of the above

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Answer: Option D

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The sum of squares of deviation of 20 observations from their mean is 720 and the mean is 60. The coefficient of variation is:

A) 5% B) 10% C) 15% D) 20%

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Answer & Solution

Answer: Option B

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