In my statistics course, similarly to I guess all other teachers concerned in calibration, I teach that for instrumental analyses weighted linear regression should be used. Why? Non-weighted linear regression (the one we can use with LINEST, SLOPE and INTERCEPT in excel) assumes same signal precision (repeatability standard deviation in other words) for all concentrations […]
Category Archives: Research
I started writing this blog to share with you some fascinating stuff I come across every once in a while. I try to cover not only the research of me and my co-workers but also other fabulous scientific papers. Also I give some practical tips concerning statistics, optimization of analytical methods (especially LC and MS) […]