I am analyzing my data of my experiment and I have a question concerning the repeated measures ANOVA. I have 2 independent variables (temperature and salinity), 1 dependent which is length and 2 measuring points (3rd and 7th day) of the experiment.
So my question is, can I use repeated measures ANOVA when I only have 2 time points? I read somewhere that you need more than 3.
In case I can't do it, is it possible to run a 3-way ANOVA and set temperature, salinity and day (3rd and 7th) as a factor?