# How to calculate df for all ANOVA designs

### Formulas for df in ANOVA. How to calculate

Here are the formulas for df in ANOVA. How to calculate df for all ANOVA designs

#### ONE-WAY ANOVA SUMMARY TABLE

Source | SS | df | MS | F | p |
---|---|---|---|---|---|

Berween | number of independent groups minus 1 | ||||

Within | total number of scores minus number of independent groups | ||||

Total | total number of scores minus 1 |

#### 2x2 FACTORIAL ANOVA SUMMARY TABLE

Source | SS | df | MS | F | p |
---|---|---|---|---|---|

Berween A | number of independent groups of factor A minus 1 | ||||

Between B | number of independent groups of factor B minus 1 | ||||

AxB (interaction) | df A x df B | ||||

Within | total number of scores minus number of groups | ||||

Total | total number of scores minus 1 |

#### ANOVA MIXED SPIT PLOT SUMMARY TABLE

SOURCE | SS | df | MS | F | p |
---|---|---|---|---|---|

Between Independent | |||||

B | number of independent groups minus 1 | ||||

Error | total number of subjects minus the number of independent groups | ||||

Total | total number of subjects minus 1 | ||||

Between repeated measures | |||||

A | number of repetitions minus 1 | ||||

AxB | df A x df B | ||||

Error | error between independent x number of repetitions | ||||

Total | |||||

TOTAL | total number of scores minus 1 |

#### REPEATED MEASURES ANOVA SUMMARY TABLE

SOURCE | SS | df | MS | F | p |
---|---|---|---|---|---|

Between Treatments | number of treatments minus 1 | ||||

Between Rows | number of subjects minus 1 | ||||

Error | df between x df rows | ||||

Total | total number of scores minus 1 |

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## Comments

## neat.

neat.