1. If there is close agreement between the observed and expected frequencies, the statistic should be relatively large.
2. The critical value at a = 0.05 for a multinomial chi-square test about a 27:9:9:9:3:3:3:1 genetic ratio is 14.067.
3. To test whether a set of samples can be modeled by a Poisson distribution, the experimenter must specify the Poisson parameter before sampling.