PASS is a computer program for estimating sample size or determining the power of a statistical test or confidence interval. NCSS LLC is the company that produces PASS. NCSS LLC also produces NCSS (for statistical analysis).
PASS includes over 920 documented sample size and power procedures.
Major statistical topics in PASS
Means - 1 or 2 Groups Means - Correlated or Paired Means - Cross-Over Designs Means - Many (ANOVA) Survival Analysis Variances ROC Curves Equivalence Normality Tests Confidence Intervals Conditional Power Proportions - 1 or 2 Groups Proportions - Correlated or Paired Proportion - Many Groups Mixed Models Regression/Correlation Non-Inferiority Group Sequential Tests Design of Experiments
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