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Try Analysis of Variance in Statistics MCQ

Post hoc is referring to tests done to determine the true source of a difference among three or more groups.

True

False

Answer

Correct Answer: True

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An analysis of variance summary is source table that lists sources of variance

True

False

Answer

Correct Answer: True

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A research design used to explore more than one treatment variable is called

Simple design

Factorial design

Variance design

Complicated design

Answer

Correct Answer: Factorial design

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Analysis of variance is ____ way

One

Two

Three

Multiple

Answer

Correct Answer: One

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Analysis of variance (or ANOVA) has only ____ independent variable

One

Two

Three

Multiple

Answer

Correct Answer: One

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Factorial analysis of variance tests the means of more than one ____variable.

Dependent

Constant

Independent

All of these

Answer

Correct Answer: Independent

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Which of the following is the formula for computing the F statistic?

F = MSbetween/MSwithin

F = SSbetween/SSwithin

F = MSwithin/MSbetween

F = SSwithin/SSbetween

Answer

Correct Answer: F = MSbetween/MSwithin

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The term “condition” matches which of the following ANOVA terms?

Treatment effect

Mean square

Factor

Level

Answer

Correct Answer: Level

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The variability between groups is due to ______.

Chance

The grouping factor

The F ratio

The level of the dependent variable

Answer

Correct Answer: The grouping factor

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ANOVA uses the _____.

F-test

T-test

P-test

R-test

Answer

Correct Answer: F-test

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When interpreting F (2, 20) = 3.49, p < 0.05, what is the between groups df?

Answer

Correct Answer: 2

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When interpreting F (2, 20) = 3.49, p < 0.05, what is the within groups df?

Answer

Correct Answer: 20

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ANOVA is like an extension of the _____.

T-test

F-test

Correlation

Regression

Answer

Correct Answer: T-test

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Which of the following is the desired outcome of an ANOVA?

Our group variances are significantly different.

Our group variances are approximately equal.

Our group means are significantly different.

Our means are approximately equal.

Answer

Correct Answer: Our group means are significantly different.

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The variability within groups is due to ______.

Chance

The grouping factor

The F ratio

The level of the dependent variable

Answer

Correct Answer: Chance

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An educational psychologist is interested in determining whether attitudes toward school change with age. She randomly selects 30 seventh-graders, 30 ninth-graders, and 30 eleventh-graders and administers a “Do you like school?” test. How many factors does this experiment have?

Answer

Correct Answer: 1

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The independent variable matches which of the following ANOVA terms?

Treatment effect

Mean square

Factor

Level

Answer

Correct Answer: Mean square

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Differences in scores produced by the independent variable corresponds with which of the following ANOVA terms?

Treatment effect

Mean square

Factor

Level

Answer

Correct Answer: Treatment effect

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If a randomized ANOVA produced MSbetween = 20 and MSwithin = 5, then the F-ratio would be _____.

20/5 = 4.00

5/20 = 0.025

20/25 = 0.80

25/5 = 5.00

Answer

Correct Answer: 20/5 = 4.00

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Which of the following is one of the assumptions we make when we do a one-way, between-subjects ANOVA?

Each condition contains the same number of scores.

The populations represented have significantly different variances.

All conditions of the single-independent variable contain independent samples.

The means of the populations represented are homogeneous.

Answer

Correct Answer: All conditions of the single-independent variable contain independent samples.

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Which of the following is NOT TRUE of the analysis of variance?

It has a higher rate of Type I error than the two-sample t-tests.

It determines whether significant differences exist in an experiment.

It is used for experiments with two or more sample means.

It is a parametric procedure.

Answer

Correct Answer: It has a higher rate of Type I error than the two-sample t-tests.

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