Ashford Bus308 quiz 3

The single factor ANOVA tests for mean differences between 3 or more groups by comparing

Each population’s variance.

Each sample’s variance.

Overall versus average sample variance.

Overall versus average population variance.

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Question 2 1 pts

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0 true_false_question 467096

The Two Factor ANOVA with Replication primarily tests for interactions between the variables.<br>

The Two Factor ANOVA with Replication primarily tests for interactions between the variables.

True

False

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0 true_false_question 467097

Excel’s single factor ANOVA output includes the effect size measure.

Excel’s single factor ANOVA output includes the effect size measure.

True

False

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0 multiple_choice_question 467093

Excel’s Two Factor ANOVA without Replication <br>

Excel’s Two Factor ANOVA without Replication

provides a method to test multiple (>2) variables at the same time.

provides a way to remove the influence of one variable on another variable.

tests for interaction impact among the factors being tested.

requires a large p-value to reject all of the tested hypothesis statements.

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0 multiple_choice_question 467083

A single factor ANOVA output includes information on<br>

A single factor ANOVA output includes information on

Means

Variances

Significance of outcome

All of the above

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0 multiple_choice_question 467078

The alternate hypothesis for the single factor ANOVA states that all means differ.<br>

The alternate hypothesis for the single factor ANOVA states that all means differ.

True

False.

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0 multiple_choice_question 467081

Setting up data entry for the single factor ANOVA in Excel involves<br>

Setting up data entry for the single factor ANOVA in Excel involves

an estimated value for the common mean.

an estimated value for the common variation.

data presented in a column format.

data presented in a table format.

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0 multiple_choice_question 467095

The Two Factor ANOVA with Replication primarily tests for mean differences.<br>

The Two Factor ANOVA with Replication primarily tests for mean differences.

True

False.

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0 true_false_question 467098

Excel’s single factor ANOVA does not have a related Effect Size measure associated with it.

Excel’s single factor ANOVA does not have a related Effect Size measure associated with it.

True

False

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0 multiple_choice_question 467075

What is the best reason to perform an ANOVA test rather than multiple t-tests?<br>

What is the best reason to perform an ANOVA test rather than multiple t-tests?

to ensure the overall confidence level remains the same.

It is easier to perform one test than several tests.

This depends upon the individual preference of the researcher.

We shouldn’t – multiple t-tests are more precise.