1518 Decide which of the three correlation coefficient value

15.18: Decide which of the three correlation coefficient values below goes with each of the scatterplots presented in Exercise 15.17

a. 0.545

b. 0.018

Solution

chart one shows slight negative relation, should be c. -0.20

Chart two shows moderately positive relationship, a) 0.545

Chart-three does not show any positive or negative relationship, correlation must be very close to zero B) 0.018