`kw.test`

performs Kruskal-Wallis test.

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`y` |
a numeric vector of data values. |

`group` |
a vector or factor object giving the group for the corresponding elements of y. |

`alpha` |
the level of significance to assess the statistical difference. Default is set to alpha = 0.05. |

`na.rm` |
a logical value indicating whether NA values should be stripped before the computation proceeds. |

`verbose` |
a logical for printing output to R console. |

A list with class "owt" containing the following components:

`statistic` |
the Kruskal-Wallis test statistic. |

`parameter` |
the parameter(s) of the approximate chi-squared distribution of the test statistic. |

`p.value` |
the p-value of the test. |

`y` |
a numeric vector of data values in which NA values (if exist) are removed. |

`group` |
a vector or factor object giving the group for the corresponding elements of y. |

Anil Dolgun

Sheskin, D. J. (2004). *Handbook of Parametric and Nonparametric Statistical Procedures*. 3rd Edition. Chapman and Hall CRC. Florida: Boca Raton.

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