Which of the following regressions represents the strongest positive linear relationship between x and y?
Regression 1
y=ax+by=ax+b
a=15.7a=15.7
b=1.7b=1.7
r=1.0278r=1.0278 Regression 2
y=ax+by=ax+b
a=3.5a=3.5
b=0.7b=0.7
r=0.5986r=0.5986 Regression 3
y=ax+by=ax+b
a=7.7a=7.7
b=18.2b=18.2
r=0.4741r=0.4741 Regression 4
y=ax+by=ax+b
a=-17.9a=−17.9
b=-16.2b=−16.2
r=-0.7989r=−0.7989