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WebPower

Basic and Advanced Statistical Power Analysis

This is a collection of tools for conducting both basic and advanced statistical power analysis including correlation, proportion, t-test, one-way ANOVA, two-way ANOVA, linear regression, logistic regression, Poisson regression, mediation analysis, longitudinal data analysis, structural equation modeling and multilevel modeling. It also serves as the engine for conducting power analysis online at <https://webpower.psychstat.org>.

Functions (41)

CRT2

Example Data For CRT With 2 Arms

CRT3

Example Data For CRT With 3 Arms

MRT2

Example Data For MRT With 2 Arms

MRT3

Example Data For MRT With 3 Arms

WebPower-package

Basic and Advanced Statistical Power Analysis

estCRT2arm

Estimate multilevel effect size from data

nuniroot

Sove An Single Equation

plot.lcs.power

Plot the power curve for Latent Change Score Models

plot.webpower

To plot Statistical Power Curve

print.webpower

To Print Statistical Power Analysis Results

summary.power

Summary Statistical Power Analysis Results

wp.anova

Statistical Power Analysis for One-way ANOVA

wp.anova.binary

Statistical Power Analysis for One-way ANOVA with Binary Data

wp.anova.count

Statistical Power Analysis for One-way ANOVA with Count Data

wp.blcsm

Statistical Power Curve for Bivariate Latent Change Score Models based on Monte Carlo Simulation

wp.correlation

Statistical Power Analysis for Correlation

wp.crt2arm

Statistical Power Analysis for Cluster Randomized Trials with 2 Arms

wp.crt3arm

Statistical Power Analysis for Cluster Randomized Trials with 3 Arms

wp.effect.CRT2arm

Effect size calculatator based on raw data for Cluster Randomized Trials with 2 Arms

wp.effect.CRT3arm

Effect size calculatator based on raw data for Cluster Randomized Trials with 3 Arms

wp.effect.MRT2arm

Effect size calculatator based on raw data for Multisite Randomized Trials with 2 Arms

wp.effect.MRT3arm

Effect size calculatator based on raw data for Multisite Randomized Trials with 3 Arms

wp.kanova

Power analysis for two-way, three-way and k-way ANOVA

wp.lcsm

Statistical Power Curve for Univariate Latent Change Score Models based on Monte Carlo Simulation

wp.logistic

Statistical Power Analysis for Logistic Regression

wp.mc.sem.basic

Statistical Power Analysis for Structural Equation Modeling / Mediation based on Monte Carlo Simulation

wp.mc.sem.boot

Statistical Power Analysis for Structural Equation Modeling / Mediation based on Monte Carlo Simulation: bootstrap method

wp.mc.sem.power.curve

Statistical Power Curve for Structural Equation Modeling / Mediation based on Monte Carlo Simulation

wp.mc.t

Power analysis for t-test based on Monte Carlo simulation

wp.mediation

Statistical Power Analysis for Simple Mediation

wp.mmrm

Power analysis for longitudinal data analysis

wp.mrt2arm

Statistical Power Analysis for Multisite Randomized Trials with 2 Arms

wp.mrt3arm

Statistical Power Analysis for Multisite Randomized Trials with 3 Arms

wp.poisson

Statistical Power Analysis for Poisson Regression

wp.popPar

Extract Population Value Table

wp.prop

Statistical Power Analysis for Tests of Proportions

wp.regression

Statistical Power Analysis for Linear Regression

wp.rmanova

Statistical Power Analysis for Repeated Measures ANOVA

wp.sem.chisq

Statistical Power Analysis for Structural Equation Modeling based on Chi-Squared Test

wp.sem.rmsea

Statistical Power Analysis for Structural Equation Modeling based on RMSEA

wp.t

Statistical Power Analysis for t-Tests

WebPower

Basic and Advanced Statistical Power Analysis

v0.5.2

GPL (>= 3)

Authors

Zhiyong Zhang [aut, cre], Yujiao Mai [aut], Miao Yang [ctb]

Initial release

2018-11-29

WebPower

Functions (41)

WebPower

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