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Module 9 explains that ANOVA compares distributions by consi…

Module 9 explains that ANOVA compares distributions by considering both the separation between sample means and the variance within samples.

Published June 29, 2026
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A significant ANOVA result tells the analyst exactly which t…

A significant ANOVA result tells the analyst exactly which two groups differ.

Published June 29, 2026
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A one-way ANOVA comparing three employee groups is significa…

A one-way ANOVA comparing three employee groups is significant. The group averages are 61, 78, and 80. Which statement is most defensible without further testing?

Published June 29, 2026
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In Module 9’s ice cream example, ketchup on ice cream illust…

In Module 9’s ice cream example, ketchup on ice cream illustrates interaction because:

Published June 29, 2026
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ANOVA evaluates differences among groups by considering both…

ANOVA evaluates differences among groups by considering both the differences between group means and the variation within the groups.

Published June 29, 2026
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A statistically significant ANOVA of 5 departments is follow…

A statistically significant ANOVA of 5 departments is followed by a manager saying, “This proves Department A is different from Department B.” Why is this statement not justified by ANOVA alone?

Published June 29, 2026
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A researcher compares satisfaction by gender and commute cat…

A researcher compares satisfaction by gender and commute category, with one score for each gender/commute combination. Which ANOVA type is appropriate?

Published June 29, 2026
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In ANOVA, the null hypothesis is rejected when the p-value i…

In ANOVA, the null hypothesis is rejected when the p-value is less than the chosen __________ value.

Published June 29, 2026
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A significant ANOVA compares 4 groups. How many unique pairw…

A significant ANOVA compares 4 groups. How many unique pairwise comparisons are possible? (hint: use k(k-1)/2 or =combin)

Published June 29, 2026
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After a significant single-factor ANOVA comparing four group…

After a significant single-factor ANOVA comparing four groups, what additional analysis is needed to determine exactly which groups differ?

Published June 29, 2026
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