ANOVA Flashcards
1
Q
When do we use ANOVA?
A
Compare means of 3 groups
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)
3
Q
What 2 values do we report in ANOVA?
A
Test statistic (F), p-value
4
Q
Hypotheses for ANOVA?
A
H0: the means are equal
Ha: At least one pairwise difference exists among the means.
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.
6
Q
CI for ANOVA?
A
We are 95% confident that the mean for _____ for type _____ is between ____ and ____ greater than type _____