Hi, the question gives the following data:

x 1.2 1.0 1.5 1.2 1.4 Y 25 40 10 27 16

I worked out the estimated regression function and got Y=97.21-58.42x

(using Y=b1+b2x,

b2=Sxy/Sxx=-8.88/0.152=-58.42

b1=Ybar-b2xbar=23.6-(-58.42*1.26)=97.21)

So at this stage I need to work out the standard error of both b1 and b2, which are the square roots of the estimated variances for b1 and b2. Is there a formula for this part? I'm guessing there is, just struggling to find it in an understandable form!

Thanks