The Chi-squared test is often used when you determine whether your data is statistically significant or not.

For example, if you plan to determine one factor(male/female) and another factor(democrats/republicans) are related, the Chi-squared test will be of your help.

democrats | republicans | |

male | 100人 | 80人 |

female | 80人 | 100人 |

* This data is an arbitrary sample for statistical study, not real data.

χ^{2} value | Evaluation |
---|---|

χ^{2} < 3.84 | p ≥ 0.05 |

3.84 ≤ χ^{2} < 6.64 | p < 0.05 |

6.64 ≤ χ^{2} | p < 0.01 |

Updated: