In: Statistics and Probability
Compute the sample correlation coefficient
r for each of the following data sets.
(Use 3 decimal places.)
(a) | x | 5 | 8 | 9 |
y | 2 | 2 | 5 |
(b) | x | 2 | 2 | 5 |
y | 5 | 8 | 9 |
r(a) = | |
r(b) = |
x | 2 | 1 | 2 | 4 | 3 |
y | 5 | 10 | 9 | 15 | 10 |
(a) Find the linear correlation coefficient r.