Fpower2 | R Documentation |

Calculates the power for a two-way ANOVA

```
Fpower2(alpha,nlev,nreps,Delta,sigma)
```

`alpha` |
input - significance level of the F-test. |

`nlev` |
input - vector of length two containing the number of levels of the factors. |

`nreps` |
input - the the number of replicates in each combination of factor levels. |

`Delta` |
input - the size of a practical difference in two marginal factor level means. |

`sigma` |
input - the standard deviation of the experimental error. |

probability of exceeding fcrit(alpha, nu1,nu2) with the non-central F-distribution with nu1 and nu2 degrees of freedom and noncentrality parameter nc

John Lawson

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