I need to fix Upper control limit for particulate matter rejects based on results of 20 to 30 batches, I am following quantile approach with 0.99865% as upper limit. data is non normal distributed hence I used smooth curve fit in SAS. could any one tell m<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />I need to fix Upper control limit for particulate matter rejects based on results of 20 to 30 batches, I am following quantile approach with 0.99865% as upper limit. data is non normal distributed hence I used smooth curve fit in SAS. could any one tell me is this the right approach?
Regards
Raghunandan
