In general, F statistics establish that there is or is not a difference between group means, and means plots suggest where the difference may lie. As this section shows, you can use the One-Way ANOVA procedure to specify exactly how the means differ and test those specifications.

Looking at the DVD data, market researchers ask:

- Are the two groups between the ages of 32 and 45 really different?
- Can participants under 32 and over 45 be considered statistically equivalent?

This example uses the file dvdplayer.sav.