Chapter 12: Regression

Predict numeric outcomes from relationships between variables.

Learning Goals

• Describe linear association.
• Use regression lines for prediction.
• Check residuals for missed structure.

Chapter Flow

• Correlation
• Regression line
• Least squares
• Visual diagnostics and residuals

What To Watch For

• The main concept introduced in each section
• The code pattern that supports the concept
• The management question the method helps answer

Carry Forward

• Use the section practice exercises to check runnable code skills.
• Keep the notebook examples runnable.
• Connect each method to interpretation, not just syntax.
• Use the glossary terms when explaining results.