# anova2x2: Compute power for a Two by Two Between Subjects ANOVA. Takes... In pwr2ppl: Power Analyses for Common Designs (Power to the People)

## Description

Compute power for a Two by Two Between Subjects ANOVA. Takes means, sds, and sample sizes for each group. Alpha is .05 by default, alternative values may be entered by user

## Usage

 ``` 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16``` ```anova2x2( m1.1 = NULL, m1.2 = NULL, m2.1 = NULL, m2.2 = NULL, s1.1 = NULL, s1.2 = NULL, s2.1 = NULL, s2.2 = NULL, n1.1 = NULL, n1.2 = NULL, n2.1 = NULL, n2.2 = NULL, alpha = 0.05, all = "OFF" ) ```

## Arguments

 `m1.1` Cell mean for First level of Factor A, First level of Factor B `m1.2` Cell mean for First level of Factor A, Second level of Factor B `m2.1` Cell mean for Second level of Factor A, First level of Factor B `m2.2` Cell mean for Second level of Factor A, Second level of Factor B `s1.1` Cell standard deviation for First level of Factor A, First level of Factor B `s1.2` Cell standard deviation for First level of Factor A, Second level of Factor B `s2.1` Cell standard deviation for Second level of Factor A, First level of Factor B `s2.2` Cell standard deviation for Second level of Factor A, Second level of Factor B `n1.1` Cell sample size for First level of Factor A, First level of Factor B `n1.2` Cell sample size for First level of Factor A, Second level of Factor B `n2.1` Cell sample size for Second level of Factor A, First level of Factor B `n2.2` Cell sample size for Second level of Factor A, Second level of Factor B `alpha` Type I error (default is .05) `all` Power(ALL) - Power for detecting all predictors in the model at once (default is "OFF")

## Value

Power for the Two Factor ANOVA

## Examples

 ```1 2 3 4 5 6 7``` ```anova2x2(m1.1=0.85, m1.2=0.85, m2.1=0.00, m2.2=0.60, s1.1=1.7, s1.2=1.7, s2.1=1.7, s2.2=1.7, n1.1=100, n1.2=100, n2.1=100, n2.2=100, alpha=.05) anova2x2(m1.1=0.85, m1.2=0.85, m2.1=0.00, m2.2=0.60, s1.1=1.7, s1.2=1.7, s2.1=1.7, s2.2=1.7, n1.1=100, n1.2=100, n2.1=100, n2.2=100, alpha=.05, all="ON") ```

pwr2ppl documentation built on April 4, 2021, 9:06 a.m.