I have a LINEST question. Is there a limit to the number of known x's I can put into LINEST?
I've hit #REF! errors when using 17 plus an intercept (or more). It worked for 15 plus an intercept (I don't have a case with 16 plus int.)
I remember something about a limit in Excel 2003 but I wasn't sure for 2007. Anyone know for sure?