Chi^2 Distribution

Probability of ∑ Z2 for standard gaussian variables Zi.

Chi^2 Distribution with ν=15

Fig. 6.2 of Gregory.

Student’s t Distribution

Fig. 6.2 of Gregory

(gaussian)

F Distribution

Fig. 6.4 of Gregory: F distribution for ν1 = 5, ν2 = 10.

Sample Data for River Toxins

Quasar Variability Data

Fig. 7.1 of Gregory

One-sided Chi^2 Test

Fig. 7.2 of Gregory