From: Stan Hilliard
Date: 12 Sep 2001
Time: 01:49:04
Greetings Bart,
> YOU SAID -- Is there a software tool to calculate the acceptance criteria for sample sizes which are not provided with ISO 2859-1 ? For example N=300;n=70 instead of n=50
TP105 is not limited to specific sample sizes. It handles any n from 1 to 1000000. TP105 is also not limited to specific alpha, beta, AQL, RQL. It handles any decimal fraction from 0.000001 to 0.999999.
You can either:
1) Enter n and Ac: The program will calculate the oc curve.
2) Enter alpha, beta, AQL, and RQL. The program will calculate n and Ac (and the OC, ASN, AOQ, and ARL curves)
Enter (1) or (2) and TP105 can calculate the sequential decision rule that has the same oc curve as the fixed-n plan.
You cannot enter n and calculate Ac, but you can enter n and Ac by trial and error to get the AQL and RQL(LQ) that you want.
> What do you think about AQL-value as maximum p' in case of 100% sampling? We have added this rule in our specifications.
For 100% sampling, why not discard or rework all defectives (maximum p'=0) -- or is the 100% sampling not perfect?
Stan Hilliard