Statistical method selection tool

Step 1. What are you interested in?

If the mean of a variable is different from a certain fixed value | |

A confidence interval for the mean | |

If the mean of a variable in one group is different from the mean in another group | |

A confidence interval for the difference between two means | |

If the mean of a variable is different between several groups (three or more different groups) | |

If the mean of a variable is different between several groups (two or more different groups), controlling for other variables | |

If the proportion of 'successes' (e.g., proportion of survivors or proportion of people buying a product) is different from a certain fixed value | |

A confidence interval for the proportion of successes | |

If the proportion of successes in one group is different from the proportion in another group | |

A confidence interval for the difference between two proportions | |

If the proportion of successes is different between several groups (three or more different groups) | |

If the scores on a variable differ between two groups (more general question than several questions above: we will narrow it down in subsequent steps) | |

If the scores on a variable differ between three or more groups (more general question than several questions above: we will narrow it down in subsequent steps) | |

If there is a relationship between two variables | |

If one variable can predict another variable | |

If one variable can predict another variable, controlling for other variables | |

If several variables can predict another variable | |

If several variables can predict another variable, controlling for other variables |