**Learning objective**

- Construct and interpret groupwise models
- Partition population variation between model variation and residual variation

**Before class**

- Begin reading chapter 4.1-4.4.
- Review for quiz on R. Here’s a study guide.

**In class**

- Building groupwise models
- Confidence intervals for sample means
- Quiz 1 on basic R.

**Daily Schedule|Rstudio**|**Piazza**|Rcommands|Intro to Mosaic|Homework Server