Which of the following regressions represents
the weakest linear relationship between x and y?
Regression 1
y = ax + b
a = = -18.6
b = -10.2
r = -0.1372
Regression 3
= ax + b
y =
a = 11.6
b = -9.1
r = 0.013
Regression 2
y = ax + b
a = -13.5
b
= = 17
r = -0.2553
Regression 4.
y = ax + b
a =
16.3
b = 15.6
r = 0.8274