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Re: AQL definitions

From: Stan Hilliard
Date: 11 Sep 2003
Time: 01:08:41

Comments

Ariel,

YOU: Alpha: 0.95 Beta: 0.06 AQL: 0.02 RQL: 0.08 n= 200 c= 8.

ME: I think you mean Alpha=(1-0.95)=0.05, in which case n=126, c=5.

EX: 1 No. For n=200, Ac=4, the oc curve indicates that at Pa=0.95 (Alpha=0.05), AQL=0.0099~0.01. Therefore if p'=0.01=1% you can expect that 95 out of the 100 lots inspected will be accepted and 5 will not. But you haven't indicated what p' (the true lot fraction defective) is. You cannot predict the p' from the sampling plan.

QUESTION: Am I right in assuming that you are using the term "c" for the acceptance number?

See: www.samplingplans.com/aqlprimer.htm

I used software program TP105 to get the oc curve for n=200, Ac=8:

See: www.samplingplans.com/software_oc.htm


Last changed: November 20, 2007