# pwr v1.2-0

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## Basic Functions for Power Analysis

Power analysis functions along the lines of Cohen (1988).

## Functions in pwr

 Name Description pwr.2p.test Power calculation for two proportions (same sample sizes) pwr.anova.test Power calculations for balanced one-way analysis of variance tests pwr.chisq.test power calculations for chi-squared tests pwr.norm.test Power calculations for the mean of a normal distribution (known variance) pwr.f2.test Power calculations for the general linear model pwr.r.test Power calculations for correlation test pwr.t.test Power calculations for t-tests of means (one sample, two samples and paired samples) pwr.t2n.test Power calculations for two samples (different sizes) t-tests of means pwr.p.test Power calculations for proportion tests (one sample) pwr.2p2n.test Power calculation for two proportions (different sample sizes) ES.w1 Effect size calculation in the chi-squared test for goodness of fit ES.w2 Effect size calculation in the chi-squared test for association cohen.ES Conventional effects size pwr-package Basic Functions for Power Analysis pwr plot.power.htest Plot diagram of sample size vs. test power ES.h Effect size calculation for proportions No Results!