7. Statistics

• 7.1. When and how to center a variable?
  • 7.1.1. Major points
  • 7.1.2. Usage clarifications of “covariate”
  • 7.1.3. Purpose of modeling a quantitative covariate
  • 7.1.4. Centering with one group of subjects
  • 7.1.5. Centering with more than one group of subjects
  • 7.1.6. Categorical variables as regressors of no interest
  • 7.1.7. References