Question

Help with AP Statistics? Will fan and medal!

We have a bivariate data set and compute the following: r = .7, sy = 9, sx = 5, x = 13.5, y = 51.6. We want to know the equation of the least-squares regression line, but we don’t have a calculator that’s powerful enough to do the necessary computations. Determine the equation of the least-squares regression line from the given data.

A. y. = 46.34 + .39x
B. y. = −51.52 + 1.26x
C. y. = 34.59 + 1.26x
D. y. = −6.624 + .39x
E. You can’t compute the regression line without knowing the original data.

Answer 1

I got C, but am not completely certain..

Answer 2

Is \(x=13.5\) the mean, \(\bar{x}\)?

Answer 3

If it is, then you're right, it's C

Answer 4

Thank you :)