ANOVA Flashcards

1
Q

When do we use ANOVA?

A

Compare means of 3 groups

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2
Q

What are the assumptions for ANOVA?

A

Normality (look at histograms and boxplots for modality, symmetry, outliers), Equal variance (Range and IQR are similar, Levene’s test p-value must be greater than .05)

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3
Q

What 2 values do we report in ANOVA?

A

Test statistic (F), p-value

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4
Q

Hypotheses for ANOVA?

A

H0: the means are equal
Ha: At least one pairwise difference exists among the means.

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5
Q

Conclusion for ANOVA

A

There is/isn’t sufficient evidence to support that there’s at least one difference among the mean _____. We reject/fail to reject H0.

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6
Q

CI for ANOVA?

A

We are 95% confident that the mean for _____ for type _____ is between ____ and ____ greater than type _____

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