General features
 
  • Calculates p-values and confidence intervals from descriptive (summary) statistics.
  • Converts p-values to confidence intervals and vice versa.
  • Useful for calculation of not reported p-values or confidence intervals in publications.
  • When planning a study, calculates what observed results are needed to get a significant result.
  • Calculates estimates from publications needed for sample size calculations.
  • Calculations for most standard tests as well as for parameters in common statistical distributions
  • Comprises hypothesis testing and confidence interval calculations
  • Any parameter may be calculated (not only p-values)
  • Simultaneous comparisons in multiple windows
  • Includes equivalence- and non-inferiority testing for most tests
  • Non-parametric tests (Wilcoxon-Mann-Whitney test, Wilcoxon signed-rank test, and Sign test)
  • Results presented as single values or in tables and graphs grouped by two other parameters

Available tests
One-, two-sided, and two one-sided (equivalence)


  • Student's unpaired t-test
  • Student's paired t-test
  • One-way ANOVA
  • Fisher's exact test
  • McNemar's test
  • Chi2 test
  • Chi2 homogeneity test
  • Life table test
  • Survival Analysis test
  • Wilcoxon rank-sum test
  • Wilcoxon signed-rank test
  • Sign test
  • Bioequivalence test
  • Correlation coefficient test
  • Regression coefficient test
 

Available statistical distributions
Tests, point estimates, and confidence intervals for


  • Means and standard deviations in one and two normal distributions
  • Medians and shapes in one and two log-normal distributions
  • Locations and scales in one and two exponential distributions
  • Proportions in one and two binomial distributions
  • Proportions in one and two hypergeometric distributions
  • Means and hazard rates in one and two Poisson distributions
  • Population means and proportions in one and two finite populations
  • Difference in means, ratio of standard deviations, correlation coefficient, and regression coefficient in a bivariate normal distribution
 
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