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skip lot and choosing a sampling plan

guy_yosef

Community Trekker

Joined:

Jul 16, 2014

I might be missing this option in JMP

but I cant find a tool that calculate skip lot number / sampling plan

most of the problems in manufatring are continuous data and even in the literature I cant find alot of models

for example:

measuring thickness

  • now I measure 10 points on each lot (i can measure max of 200 points)
  • my average is 100 and sigma is 11
  • LSL, USL = 50, 150 (Cpk ~1.5)

how can i decide if its possible to reduce the sampling to 9 or 8 points per lot or introducing skip rate?

there are many options of sampling plan in DOE calculator. but none seems to feet to continuous production