Description Usage Arguments Value

Power and sample size for the chi-square distribution given non-centrality, degrees of freedom, alpha, N (for chisq.power), and power (for chisq.sample.size)

1 2 3 | ```
chisq.power(n, nc, df, alpha)
chisq.power.dif(n, nc, df, alpha, power)
chisq.sample.size(nc, df=df, alpha, power, lower=20, upper=100000)
``` |

`n` |
sample size (for power) |

`nc` |
non-centrality parameter |

`df` |
degrees of freedom |

`alpha` |
type-I error rate |

`power` |
desired power (for sample size) |

`lower` |
lower bound for search space for sample size |

`upper` |
upper bound for search space for sample size |

power, the difference in power from target power, and sample size, respectively for the three different functions

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