[ New Features | Overview | Graphs | Statistics | Requirements ] Statistics Analysis of Variance Independent and paired t-tests One, two and three-way ANOVA One and two-way repeated measures ANOVA Nonparametric Statistics Mann-Whitney rank sum test Wilcoxon signed rank test Kruskal-Wallis ANOVA Friedman RM ANOVA Correlation Spearman rank order Pearson product moment Regression Linear and multiple linear; polynomial; stepwise; best subsets; nonlinear; multiple logistic Rates and Proportions Chi-square analysis of contingency tables McNemar's test Fischer's exact test Power and Sample Size t-tests; proportions; ANOVA; chi-square; correlation Descriptive Statistics Mean, standard deviation, standard error of mean, median, percentiles, sum of squares, skewness, kurtosis, confidence interval for the mean range, max. and min.values, normality, sample size, missing value content Normality Kolmogorov-Smirnov Equal Variance Levene median test ANOVA Multiple Comparison Options Holm-Sidak test* Tukey Duncan's Multiple Range Fisher LSD Student-Newmann-Keuls Bonferroni t-test Dunnett's test Dunn's test Survival Analysis Single group LogRank Gehan-Breslow Survival Curve options: error bars, confidence intervals, censored or failure points, fraction or percentage scale* Regression Diagnostics Multicollinearity, homoscedasticity, residuals Cook's Distance and more Test-Specific Options Set alpha for power calculation Set power for sample size calculation Mathematical Transforms parameter determination functions using ape, dsinp, fwhm, inv, lowess, lowpass, sinp, x25, x50, x75, xatymax, xwtr* Use "for" and "if...then...else" statements Trigonometric, Numeric, Range, Accumulation Random number generator, Precision Area and distance, User-defined and more * new in SigmaStat 3.5