**Chapter 3**

1. Make up 3 datasets each with 10 observations (rows) and 2 variables (columns). One should have a correlation greater than .8; one should have a correlation between .4 and .7; one should have a correlation between -.20 and +.20.

2. Compute Pearson's r and Spearman's rho for the following data:

1,2

5,9

6,8

12,20