October 23, 2019
hey, separation plots are kinda cool
Ever since I first started learning about regression analysis, I found myself wishing I could do something equivalent to inspecting residuals for logistic regressions like you could with OLS. Earlier this week, I was looking around for more ways to spot-check logistic regression models, and I came across a plotting technique that’s described in this paper (Greenhill, Ward, & Sacks, 2011). They’re called “separation plots”, and they’re used to help assess the fit adequacy of a model that has a binary variable as its dependent variable.
Read more