# Statistical Power and Sample Size Calculation Tools

## Documentation for package ‘pwrss’ version 0.3.1

- DESCRIPTION file.
- User guides, package vignettes and other documentation.
- Package NEWS.

## Help Pages

plot.pwrss | Type I and Type II Error Plot
power.chisq.test | Statistical Power for the Generic Chi-square Test
power.f.test | Statistical Power for the Generic F Test
power.t.test | Statistical Power for the Generic t Test
power.z.test | Statistical Power for the Generic z Test
pwrss.chisq.gofit | Goodness-of-Fit or Independence (Chi-square Test)
pwrss.f.ancova | Analysis of (Co)Variance (F test)
pwrss.f.anova | Analysis of (Co)Variance (F test)
pwrss.f.reg | Linear Regression: R-squared or R-squared Difference (F Test)
pwrss.f.regression | Linear Regression: R-squared or R-squared Difference (F Test)
pwrss.f.rmanova | Repeated Measures Analysis of Variance (F test)
pwrss.np.2groups | Difference between Two Groups (Non-parametric Tests for Independent and Paired Samples)
pwrss.np.2means | Difference between Two Groups (Non-parametric Tests for Independent and Paired Samples)
pwrss.t.2means | Difference between Two Means (t or z Test for Independent or Paired Samples)
pwrss.t.mean | One Mean against a Constant (z or t Test)
pwrss.t.reg | Linear Regression: Single Coefficient (t or z Test)
pwrss.t.regression | Linear Regression: Single Coefficient (t or z Test)
pwrss.z.2corrs | Difference between Two Correlations (Independent Samples z Test)
pwrss.z.2cors | Difference between Two Correlations (Independent Samples z Test)
pwrss.z.2means | Difference between Two Means (t or z Test for Independent or Paired Samples)
pwrss.z.2props | Difference between Two Proportions (z Test)
pwrss.z.cor | One Correlation against a Constant (One Sample z Test)
pwrss.z.corr | One Correlation against a Constant (One Sample z Test)
pwrss.z.logistic | Logistic Regression: Single Coefficient (Large Sample Approx. Wald's z Test)
pwrss.z.logreg | Logistic Regression: Single Coefficient (Large Sample Approx. Wald's z Test)
pwrss.z.mean | One Mean against a Constant (z or t Test)
pwrss.z.med | Indirect Effect in Mediation Analysis (z, Joint, and Monte Carlo Tests)
pwrss.z.mediation | Indirect Effect in Mediation Analysis (z, Joint, and Monte Carlo Tests)
pwrss.z.poisreg | Poisson Regression: Single Coefficient (Large Sample Approx. Wald's z Test)
pwrss.z.poisson | Poisson Regression: Single Coefficient (Large Sample Approx. Wald's z Test)
pwrss.z.prop | One Proportion against a Constant (z Test)
pwrss.z.reg | Linear Regression: Single Coefficient (t or z Test)
pwrss.z.regression | Linear Regression: Single Coefficient (t or z Test)