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Statistics MCQs

Page 6 of Statistics multiple-choice questions with answers. Tap an option to check yourself.

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Question 101 Statistical Inference

Which symbol denotes the level of significance?

Correct answer A. α

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Question 102 Statistical Inference

What are the values that separate the rejection region from the acceptance region called?

Correct answer A. Critical value

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Question 103 Statistical Inference

How is the power of a test denoted?

Correct answer C. 1 − β

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Question 104 Statistical Inference

1 − α is the probability associated with which region?

Correct answer C. Acceptance Region

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Question 105 Statistical Inference

A parameter is what kind of quantity?

Correct answer B. Constant

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Question 106 Statistical Inference

If we reject the null hypothesis, which error might we be making?

Correct answer A. Type I error

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Question 107 Statistical Inference

Analysis of variance (ANOVA) is a test for the equality of?

Correct answer A. Means

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Question 108 Statistical Inference

What is a quantity obtained by applying a certain rule or formula known as?

Correct answer D. Estimate

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Question 109 Statistical Inference

For the t-distribution, which of the following is affected by increasing the sample size?

Correct answer D. All of the above

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Question 110 Statistical Inference

What condition is usually required for applying the central limit theorem to approximate the sampling distribution of the mean by a normal distribution?

Correct answer C. n > 30

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Question 111 Statistical Inference

When α = 0.05, what is the probability of a Type II error?

Correct answer A. Cannot be determined without more information

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Question 112 Statistical Inference

From what is the critical value of a test statistic determined?

Correct answer A. The sampling distribution of the statistics assuming Null Hypothesis

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Question 113 Statistical Inference

When does a runs test lead to rejecting the null hypothesis of randomness?

Correct answer C. Either of the above

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Question 114 Statistical Inference

Which test can be used to test for a difference between two populations?

Correct answer B. Either of the above

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Question 115 Statistical Inference

To compare the times to failure of radar transponders made by firms A, B and C using an airline’s sample data, which test may be used?

Correct answer A. Kruskal-Wallis test

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Question 116 Statistical Inference

The Wilcoxon rank-sum test is used to compare?

Correct answer C. Two populations

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Question 117 Statistical Inference

Which test is most likely to assess this null hypothesis: H0, the number of violations per apartment among all city apartments follows a binomial distribution with probability of success P = 0.3 in each trial?

Correct answer C. The Kolmogorov-Smirnov test

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Question 118 Statistical Inference

Which test can be used when testing for randomness?

Correct answer A. Runs test

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Question 119 Statistical Inference

What is the non-parametric equivalent of an unpaired (independent) samples t-test?

Correct answer A. Mann-Whitney U test

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Question 120 Statistical Inference

In hypothesis testing, is it true that alpha + beta = 1?

Correct answer B. No

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