Chapter Summary

Chapter 12


Analysis of variance (ANOVA) proce­dures allow us to examine the variation in means in more than two samples. To deter­mine whether the difference in mean scores is significant, ANOVA examines the differences between multiple samples, as well as the differ­ences within a single sample.

One-way ANOVA is a procedure using one dependent variable and one independent variable. The five-step hypothesis testing model is applied to one-way ANOVA.

The test statistic for ANOVA is F. The F statistic is the ratio of between-group variance to within-group variance.