Find the best predicted value of y corresponding to the given value of x.
-Eight pairs of data yield $\mathrm { r } = 0.708$ and the regression equation $\mathrm { y } = 55.8 + 2.79 x$. Also, $\bar { y } = 71.125$. What is the best oredicted value of $y$ for $x = 9.1$ ?
A) $510.57$
B) $71.13$
C) $57.80$
D) $81.19$

Question

Quizplus · Accepted Answer

To find the best predicted value of $y$ for $x = 9.1$, substitute $x = 9.1$ into the regression equation $y = 55.8 + 2.79x$. This gives $y = 55.8 + 2.79(9.1) = 55.8 + 25.39 = 81.19$.

Find the Best Predicted Value of Y Corresponding to the Given