Figure 8.

Determining what statistical technique or test to do when: (1) mean and standard deviation if no extreme or outlying values are present; (2) independence of observations, normality or large samples, and homogeneity of variances; (3) independence of pairs, normality or large samples, and homogeneity of variances; (4) repeated measures in independent observations, normality or large samples, and homogeneity of variances; (5) independence of observations and expected count >5 in each cell; (6) repeated measures in independent observations.