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SIGMASTAT 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
Survival Analysis
  • Single group
  • LogRank
  • Gehan-Breslow
  • Survival Curve options: error bars, confidence intervals, censored or failure points, fraction or percentage scale*
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
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
  • Use "for" and "if...then...else" statements
  • Trigonometric, Numeric, Range, Accumulation
  • Random number generator, Precision Area and distance, User-defined and more
  • parameter determination functions using ape, dsinp, fwhm, inv, lowess, lowpass, sinp, x25, x50, x75, xatymax, xwtr*
* new in SigmaStat 3.0

 

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