Which of the following regressions represents the weakest linear relationship between x and y?
Regression 1
y = ax + b
a = 19.8
b= -13.1
r=0.5449
Regression 2
y = ax + b
a = 5.6
b= 6.3
r = 0.0718
Regression 3
y = ax + b
a = -3.1
b = 3.3
r= -0.3848
Regression 4
y = ax + b
a = 11.4
b = 2.7
r= 0.7405
Regression 1
O Regression 2
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Regression 3
O Regression 4
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