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31-ANOVA.Rmd
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31-ANOVA.Rmd
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# (PART\*) ANOVA {-}
# ANOVA: Oneway {#oneway-anova}
#### How to perform a Oneway ANOVA in jamovi: {-}
1. You need one grouping variable and one continuous outcome variable. Make sure that the measurement levels are set^[This is demonstrated in section \@ref(level-of-measurement).] so that the grouping variable is marked with <img src="images/icons/nominal.JPG" width="3%" alt=" grouped data icon"/> and the continuous variable is marked with <img src="images/icons/continuous.JPG" width="3%" alt=" the continuous data icon"/>.
A correct setup should look similar to this:
<img src="images/data_format/data_format_anova.JPG" width="40%"/>
2. Select `Analyses` -> `ANOVA` -> `One-way ANOVA`.
<img src="images/select/select_anova_oneway.JPG" width="45%"/>
3. Drag and drop your outcome variable to __Dependent Variable__ and your grouping variable to __Fixed Factors__.
<img src="images/add_var/add_var_anova_oneway.JPG" width="70%"/>
4. Select wether your variances are equal or unequal. To test for equality of variancess using Levene's test, tick the box Equality of variances.
<img src="images/add_var/add_var_anova_oneway_2.JPG" width="70%"/>
5. The results is shown in the right pane:
<img src="images/output/output_anova_oneway.JPG" width="70%"/>