Homework 2

Chapter 3

Complete the following 6 problems:

1. Problem 3.2
2. Problem 3.3a-d
   • For part d, just plot a normal probability plot.
3. Problem 3.7a-d
   • For part a, use a dot plot instead of a stem-and-leaf plot.
   • For part d, follow directions for 3.3d above.
4. Problem 3.8a-d
   • Same as directions for Problem 3.7.
5. Problem 3.18
6. Exercise 3.19
   • Hint: See the comment at the bottom of page 106 of the textbook.

Additional Directions:

For each problem that involves a data set, also plot the the diagnostic plots using:

par(mfrow = c(2, 2))
plot(lm.out, which = c(1:3))
acf(lm.out$residuals)

and comment on whether they indicate deviations (or not) from the SLRGN model.