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Statistics (Social And Behavioral Sciences) MCQ

You are conducting a study which involves 4 groups of participants and you have 8 participants in each group. What is dfBG?

Answer

Correct Answer: 3

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You are conducting a study which involves 3 groups of participants and you have 9 participants in each group. You are doing a one-way ANOVA using α = .05. What is the critical value for the F-ratio?

3.01

3.86

4.46

3.40

Answer

Correct Answer: 3.40

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Based on the information in the following ANOVA summary table, and using α = .05, the decision would be to reject the null hypothesis.Source,SS,F,Test group,70.00,6.88,Error,81.32Total,151.32

True

False

Answer

Correct Answer: True

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An F-ratio can be either positive or negative.

True

False

Answer

Correct Answer: False

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The amount of between-group variability must be significantly greater than the amount of within-group variability to reject the null hypothesis.

True

False

Answer

Correct Answer: True

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Based on the information in the following ANOVA summary table, how many total participants were there?Source,SS,F,Test group,70.00,6.88,Error,81.32,Total,151.32

Answer

Correct Answer: 28

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Based on the information in the following ANOVA summary table, and using α = .05, what would be the critical value for the F-ratio?Source,SS,F,Test group,70.00,6.88,Error,81.32 Total,151.32

2.96

3.01

3.37

3.42

Answer

Correct Answer: 3.01

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You are conducting a study which involves 4 groups of participants and you have 12 participants in each group. You are doing a one-way ANOVA using α = .05. What is dftotal?

Answer

Correct Answer: 47

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An F-ratio is ______.

Between-group variance/within-group variance

Within-group variance/between-group variance

Always < 1.00

Always between –1.00 and +1.00

Answer

Correct Answer: Between-group variance/within-group variance

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A one-way ANOVA is used to test the difference between the means of 2 groups with two or more independent variables.

True

False

Answer

Correct Answer: False

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Which of the following would be a correct statement for the alternative hypothesis when doing an ANOVA?

All µs are equal.

Not all µs are equal.

Not all sample means are equal.

All sample means are equal.

Answer

Correct Answer: Not all µs are equal.

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(# groups –1) is ______.

DfBG

DfWG

The critical value for an F-ratio

MSWG

Answer

Correct Answer: DfBG

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You are conducting a study which involves 3 groups of participants and you have 9 participants in each group. What is dfWG?

Answer

Correct Answer: 24

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With a one-way ANOVA, R2 is a measure of effect size.

True

False

Answer

Correct Answer: True

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Based on the information in the following ANOVA summary table, how many groups were there?Source,SS,FTest group,70.00,6.88Error,81.32Total,151.32

It cannot be determined from the ANOVA summary table.

Answer

Correct Answer: 4

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Statistical procedure used to control familywise error when conducting all possible simple comparisons between groups is tukey's test

True

False

Answer

Correct Answer: True

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Statistical procedure used to control familywise error when conducting all possible simple and complex comparisons in a set of data is scheffe's test

True

False

Answer

Correct Answer: True

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Analytical comparisons involving more than two groups is ___ comparisons

Simple

Complex

Constant

Equal

Answer

Correct Answer: Complex

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Analytical comparisons between two groups is ____ comparisons

Simple

Complex

Constant

Equal

Answer

Correct Answer: Simple

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Statistical procedure used to control familywise error when comparing each group with a single reference group is dunnett's test

True

False

Answer

Correct Answer: True

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Probability of making at least one Type ____ error across a set of comparisons is familywise error

III

Answer

Correct Answer: I

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Comparisons not having been built into a research design prior to data collection is unplanned comparisons

True

False

Answer

Correct Answer: True

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____ comparisons built into a research design prior to data collection.

Planned

Unplanned

Analytical

All of these

Answer

Correct Answer: Planned

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Comparisons between groups that are part of a larger research design is called

Planned

Unplanned

Analytical

All of these

Answer

Correct Answer: Analytical

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Percentage of variance in the dependent variable associated with differences between groups comprising an independent variable is __ squared

Answer

Correct Answer: R

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Table summarizing the calculations of an analysis of variance is ANOVA summary table

True

False

Answer

Correct Answer: True

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Statistic used to test differences between group means is called

A ratio

F ratio

M ratio

X ratio

Answer

Correct Answer: F ratio

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Statistical procedure used to test differences between the means of three or more groups comprising a single independent variable is ___ ANOVA

One way

Two way

Three way

Fourth way

Answer

Correct Answer: One way

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Analysis of variance is a Family of statistical procedures used to test differences between ___group means.

One

Two

Two or more

Zero

Answer

Correct Answer: Two or more

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