> I am trying to decide between using a multiple linear regression or a linear
> mixed effects model for my data:
> ...
> but I keep getting the following error code:
>
> Error in anova.lmlist (object, ...):
>
> models were not all fitted to the same size of dataset
anova is defaulting to anova.lm, and that doesn't expect a mixed effects model.
Switch them round to put model2 first:
anova (model2, model1)
S Ellison
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