1/x weighting

[petiti]

Who know how to make 1/x or 1/x2 weighting regression? How to build the 1/x weighting calibration? What is the formular?
Pls help me.

[Schmitty]

Did you want to try this in Excel?

Something like this should get you started: http://en.wikiversity.org/wiki/Least_sq ... sing_Excel

I usually just use Empower or Anlyst for the data I have already collected.

[grzesiek]

This contains unweighted/weighted regresion - ISO 11095:1996 Linear calibration using reference materials

[shahis77]

Which software do you have on which you are trying to make 1/x curve