Hi,
I have performed SLR using "proc reg" on some data, and output the 95% confidence and prediction intervals.
There isn't much data and I'm looking at it for someone else who doesn't use SAS.
Using Excel, I need to replicate the plot of the data with a regression line and the limits.
How do I calculate these limits?
I don't understand how SAS calculates "STd Error Mean Predict" values. Does anyone know the formula? I could just paste the values in but that's wrong!
Thanks,
Katie xx