2.4 Cautions about Regression and Correlation
There are serious Limitations to Correlation and Regression
- Limitations to Correlation and Regression
- Recalling Residuals
- A few comments on Residuals
- Calculating Residuals
- Residual Plot
- Recipe: Residual Plot
- Ex: Fat Consumption vs. Cancer
- Where are residuals coming from?
- The Residual Plot
- More residual plots
- Slide 12
- Interpreting Residual Plots
- Residuals, Beware
- Lurking Variables
- Example
- Example:
- Answers
- Outliers and influential observations
- "Gesell Data:"
- The Danger Zone
- Ex: But why doesn’t correlation imply causatin???!!
- Common Response
- Ex: Correlation does not imply Causation
- How DO we establish causation???
- Confounding
- Final summary