CHAPTER 24 Ten Distributions Worth Knowing 359

The Fisher F Distribution

This family of distributions is frequently used to obtain p values from an analysis

of variance (ANOVA). Figure 24-10 shows the shape of the Fisher F distribution for

various degrees of freedom.

FIGURE 24-9:

The chi-square

distribution.

© John Wiley & Sons, Inc.

TABLE 24-2

Critical Values of Chi-Square for α = 0.05

Degrees of Freedom

2Crit

1

3.84

2

5.99

3

7.81

4

9.49

5

11.07

6

12.59

7

14.07

8

15.51

9

16.92

10

18.31