Exercise

Refresher on fitting linear models

During this exercise, you'll see how a linear model is a special case of a generalized linear model (GLM). You will use the ChickWeight dataset that we introduced during the video. I have already extracted the last observed weights for you. With the dataset, you will see if Diet affects weight at the end of the study.

Recall from the video that a linear model looks like lm(formula = y ~ x, data = dat) and that a GLM looks like glm(formula = y ~ x, data = dat, family = 'family').

Instructions

100 XP

Fit a linear model with variable weight predicted by variable Diet using the ChickWeightEnd dataframe.
Fit a GLM using the same formula and data, but also include the gaussian family.