Exercise: Rerun the ANCOVA Models

Let’s test what we’ve learned so far about ANCOVA models.

Assignment

Rerun the ANCOVA models we explored in one of the previous chapters, but use all of the data and include random effects for block and tank within the block.

The code used to create the model is in the code space given below.

Don’t forget to check the model fit via the Q-Q plot. How does it look?

Try to code this before moving towards the solution.