Statistics and ANOVA

anova1w - One-way analysis of variance.   [demo]
anova2w - Two-way analysis of variance.   [demo]
chilimit - Chi-squared confidence limits from sum-of-squares residuals.   [demo]
jmlimit - Confidence limits for Q residuals via Jackson-Mudholkar.   [demo]
ftest - F test and inverse F test statistic.   [demo]
ttestp - Evaluates t-distribution and its inverse.   [demo]
percentile - Finds percentile point (similar to MEDIAN).   [demo]