Chapter 2 - Simple Regression

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Lecture Slides:    Powerpoint     PDF

Learning Objectives

  • Explain what a simple regression model is
  • Fit a simple regression model using the least-squares criterion
  • Compute R-squared to measure how well the model fits the data
  • Interpret the results from a simple regression model

Examples

What We Learned

  • How to solve the least-squares problem to fit a simple regression model.
  • How to apply the least-squares formula using a spreadsheet.
  • R-squared is a useful characteristic of your model, but maximizing R-squared is often not the objective of your analysis