Beginning R: An Introduction to Statistical Programming

CHAPTER 14

Logistic Regression

In bivariate and multiple regression (Chapters 12 and 13), we used a continuous dependent variable. There are occasions in which the outcome is an either-or (0, 1) binary outcome. Fisher developed a technique known as discriminant analysis for predicting group membership (by maximizing the combination of predictor scores to separate the two groups). This is a fine technique, and one that has been around for a long time. There is, however, one major problem with discriminant analysis, namely that it can take advantage only of continuous predictors. A more modern technique to the prediction (and classification as ...