Question

of anyone is familiar with stats, hit me up! im trying to work a correlation/regression problem.

Answer 1

at an archaeological site with elevation 7.5 (thousand) feet (x), what does the least squares equation forecast for the percentage of y?

Answer 2

x:5.25, 5.75, 6.5, 7, 7.5
y: 38, 37, 66, 80, 82

Answer 3

i got 82.6....final answer. thanks for reading!

Answer 4

I got y = -17.369x^3 + 332.39x^2 - 2078.9x + 4303.5, with an R-squared value of 0.9978 (where x is in thousands of feet).
So y should be 81.14063 at x = 7.5 (thousand) feet.