The best predicted value is
ŷ = 19.4 + 0.93*(50) = 65.9
ŷ = 19.4 + 0.93*(50) = 65.9
Use the given data to find the best predicted value of the response variable. Nine pairs of data yield r = 0.867 and the regression equation y^=19.4+0.93x. Also, y_=64.7. What is the best predicted value of y for x=50?