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Challenge #157: An Expert Challenge

Erin
10 - Fireball

really HATE how amazingly simple this one turned out to be. Wow. 🙄 I know I tend to make things more complicated than it needs to be, but sheeeeewwwwwy ......

 

Spoiler
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I figured out step 1 all by myself, so proud. Totally skipped over step 2 because I'm silly. Collinearity is only mentioned in every single predictive article / training / help reference out there. The Chi-Sq effect had me all tripped up. It's referenced for individual variables in the distribution analysis, but not for overall models. If only I had taken a step back and realized we were comparing two models where one is the subset of the other, the very use case for a nested test. How often do you get to use a nested test? That depends, how often do you study for the expert exam? 😏