- Last Time: Test 3
- Return Test 3
- You may add 4 points to your score (since my key is missing 4 points!).
- I'm going to take a weighted average of your test grades:
1.5*best + .5*worst + middle
to get your test points for the course.
- Homework for chapter 18 due at the time of your final (it will serve as part
of the final grade). You should also expect to answer questions about
an additional regression similar to those two.
- You may hand in the chapter 13 review problems no later than noon this
Friday as a homework replacement.
- Return 13.6 homework:
- Today:
- More linear regression: "...to predict the value of one
variable on the basis of other variables."
- Reminders:
- Predicting test scores based on homework (here's the NEW data):
Previously:
Of what value is homework? "Each point higher on
homework (out of 100) means .3 points higher on the
tests (out of 100)...."
- education and
internet use
- What's going on? How does linear regression work?
- Do scatter plots indicate a linear relationship?
- "Correlation" measures a linear relationship.
- How do we find a "best-fit" line?
- How good is that line?
- New Examples:
Next time: Review for final; evaluations
Links:
Website maintained by Andy Long.
Comments appreciated.
