Discussion of Quiz #1

See Sec3.2R

- More on Multiple Regression
- Inference for multiple regression
- Partitioning Variability
- Adjusted R-squared
- Confidence intervals for a mean response
- Prediction intervals for a new response

R Demonstration

- See Kids198.R script for a variety of new commands

See Sec3.3R

- Comparing two regression lines
- Fitting separate regression lines (for different levels of a group variable)
- Indicator variables
- Comparing intercepts
- Comparing slopes
- Nested F-test

R LAB

- Exercise 3.32 on p. 147

Please read Section 3.4 for class on Wednesday.