Exercise

How do people value white chocolate?

With effects coding, we can find the parameter for the left-out level as the negative sum of the parameters for the other levels of the factor. Let's compute the value of White chocolate using this rule. choc_m7 is still loaded.

Instructions

100 XP

The coefficients for the levels of Type are in positions 5 to 8. Select these coefficients and print them to confirm.
Compute the negative sum of those coefficients. This is the coefficient for the left-out White type.