Find an equation of the least squares line, then use it to complete the table.

Question

X- 111 169 230 287 335 ?
Y- 2 3 4 5 6 7

Extrapolation

I missed the lesson on this and as far as I can tell I think the least squares line is y= .01764x+ .oo693

If anyone could verify my line and and help me with the rest? Find the "?" in the table. I also don't know what it means by extrapolation? Is that just finding the value in the table?

Answer 1

Your least squares line looks okay.
Now, to find the ?, use 7 for y in the equation and solve for x. That will be the value you seek.

Here's how the equation would look:
7 = .01764x + .00693

I hope this helps.

Answer 2

352.4285714286