I have a data set where I try to analyse a continuous variable according to 10 categorical variables and I would like to perform a ANOVA analysis. How should I proceed ? I'm able to interpret the results but I have no clue how to operate :
- An anova with all the variables at once : summary(aov(Cont ~ . , df))
- An anova for each categorical variable : summary(aov(Cont ~ Team , df)) and summary(aov(Cont ~ Materiel, df)), ect
Because some variables are significant alone, but not with all of the at once (because orders matters as I understood)
Also, what if I want to test interactions ? Should I test them all at once ?