Simple Linear Regression
Reading Assignment: Pages 29-53 in RWG;
EXAMPLE:
Blood/Lead Data page 60 in RWG (sas commands)
OUTLINE:
- Ordinary Least Squares Estimates of slope and intercept
- R-square and correlation
- Residual Analysis
- Residuals versus Fitted values
- Normal Quantile Plots of Residuals
- Histograms and Boxplots of Residuals
- Hypothesis testing: t-tests and F-tests, p-values
- Confidence Intervals:
- parameters,
- mean,
- future observations.
- Conclusions and Study Design
Lead Example:
Plot w/ Regression line
Residual plots
More Residual plots
SAS OUTPUT
Confidence and Prediction Intervals: Lead Example