1. Midterm Scores
> stem(scores)
The decimal point is at the |
10 | 38
12 | 5
14 |
16 | 3
18 | 835
20 | 5033
22 |
24 | 388
> summary(scores)
Min. 1st Qu. Median Mean 3rd Qu. Max.

2. Gauss-Markov Theorem. page 374

3. There is a generalized inverse variant
Example.

4. Eg. Teaching methods data, p. 427
Method average
Usual …
Praised …
two-sample model / one-way layout

6. Robust/resistant estimators
outlier - observation that is unusual compared to others
resistant statistic - not strongly affected by outliers
robust estimate - performs well under a range of potential models centered at an ideal model

12. 13 by 5

17. ANOVA table

18. 13 by 5