Description Usage Arguments Value Examples

Compute power for an Chi Square 2x2 Takes proportions for each group. Alpha is .05 by default, alternative values may be entered by user

1 | ```
Chi2x2(r1c1, r1c2, r2c1, r2c2, n, alpha = 0.05)
``` |

`r1c1` |
Proportion of overall scores in Row 1, Column 1 |

`r1c2` |
Proportion of overall scores in Row 1, Column 2 |

`r2c1` |
Proportion of overall scores in Row 2, Column 1 |

`r2c2` |
Proportion of overall scores in Row 2, Column 2 |

`n` |
Total sample size |

`alpha` |
Type I error (default is .05) |

Power for 2x2 Chi Square

1 | ```
Chi2x2(r1c1=.28,r1c2=.22,r2c1=.38,r2c2=.12,n=100)
``` |

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