Summary
Contents
Jason W. Osborne's Best Practices in Logistic Regression provides students with an accessible, applied approach that communicates logistic regression in clear and concise terms. The book effectively leverages readers’ basic intuitive understanding of simple and multiple regression to guide them into a sophisticated mastery of logistic regression. Osborne's applied approach offers students and instructors a clear perspective, elucidated through practical and engaging tools that encourage student comprehension.
Continuous Predictors: Why Splitting Continuous Variables Into Categories Is Undesirable
Continuous Predictors: Why Splitting Continuous Variables Into Categories Is Undesirable
When I was in graduate school my advisor and I were exploring self-esteem effects in college undergraduate samples. In one project, my advisor directed me to split students at the median into “high self-esteem” and “low self-esteem” groups and do 2 × 2 analysis of variance (ANOVA) analyses (self-esteem by experimental condition).
Unfortunately for researchers in this area, individuals with truly low self-esteem are scarce—most individuals rate their global self-esteem relatively high. This is probably a good thing. We generally want people to feel good about themselves, but when you have a variable (like global self-esteem) that theoretically ranges from 1 to 4 with a median of 3.14, one must wonder what it means to ...
