An F?test is a ratio of variances. This may be used to test hypotheses about the equality of variances. However, the F?test is also used in ANOVA to test whether group means differ. Please explain how a statistic based on variances can be used to determine if a set of group means differ.
This is what I came up with. Any thoughts?
If the differences between the group means is large relative to the amount of variability in the scores, the group differences are probably significant. If, however, there is a lot of variability in the scores, then the difference between the group means will not seem so large, a non-significant difference.
This is what I came up with. Any thoughts?
If the differences between the group means is large relative to the amount of variability in the scores, the group differences are probably significant. If, however, there is a lot of variability in the scores, then the difference between the group means will not seem so large, a non-significant difference.