If the regression equation is: Y = -4.2 + 3.6X,then the expected score for Y when X is 4 would be ____.
A)-18.6
B)-10.2
C)+10.2
D)+18.6

Question

Quizplus · Accepted Answer

To find the expected score for Y when X is 4, we need to substitute X=4 into the equation: 
Y = -4.2 + 3.6X 
Y = -4.2 + 3.6(4) 
Y = -4.2 + 14.4 
Y = 10.2 
Therefore, the expected score for Y when X is 4 is 10.2. Choose option C, +10.2.

If the Regression Equation Is: Y = -4