13. Multiple Regression Analysis: Further Issues

IN THIS CHAPTER

Solving Unbalanced Factorial Designs Using Multiple Regression 337

Experimental Designs, Observational Studies, and Correlation 345

Using All the LINEST() Statistics 348

Managing Unequal Group Sizes in a True Experiment 355

Managing Unequal Group Sizes in Observational Research 356

Chapter 12, “Multiple Regression Analysis and Effect Coding: The Basics,” discusses the concept of using multiple regression analysis to address the question of whether group means differ more than can reasonably be explained by chance. The basic idea is to code nominal variables such as type of medication administered, or sex, or ethnicity, so as to represent them as numeric variables. Coded in ...

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