Exercise

lm vs. Poisson coefficients

A linear model and Poisson regression have been fit for you. In this exercise, you'll extract the coefficients for both models and compare them. In Step 3, you will need to exponentiate the results from the Poisson regression. This is needed because the Poisson coefficients are estimated on link-scale, not the raw data-scale.

Recall from the video that linear models intercepts are additive whereas Poisson regression intercepts are multiplicative.

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You have been given the model lmOut, extract the coefficients using coef() and save as lmCoef.