Use the given data to find the best predicted value of the response variable. Ten pairs of data yield r = 0.003 and the regression equation $\hat { y } = 2 + 3 x . \mathrm { Also } , \bar { y } = 5.0$ . What is the best predicted value of y for x = 2?
A) 8.0
B) 17.0
C) 7.0
D) 5.0

Question

Quizplus · Accepted Answer

Since the correlation coefficient r is very close to 0, it indicates no linear relationship between x and y. Therefore, the best predicted value of y is the mean $\bar{y} = 5.0$.

Use the Given Data to Find the Best Predicted Value y^=2+3x.Also,yˉ=5.0\hat { y } = 2 + 3 x . \mathrm { Also } , \bar { y } = 5.0y^​=2+3x.Also,yˉ​=5.0

Use the Given Data to Find the Best Predicted Value $\hat { y } = 2 + 3 x . \mathrm { Also } , \bar { y } = 5.0$