sample size after reduced frequency

[#1]

we are taking a sample of 136 parts from lots of 10,000 parts each . 

the P chart is shown here under attached . 

As can be seen the lot to lot variation is low . 

Now we need to start reducing the frequency to a sample every 6 or 8 lots , what would be the sample size ?

Pass is 0 failure   fail is 1    Binomial 

Carlo 

[#2]

hi Carloaz,

hoping this will help you.

I do a quick view of your data, and the P is 0.0656% ( this can also mean AOQL)

to determined the sample size (Lot sampling), we input the AQL & RQL and Lot size.

here's the sample, assuming Lot size 10000, AQL 0.0656%,RQL 0.1%.

So if we want 0 defective in sampling, 100 parts of each lot sampled. Reject lot if defect >0

I do some research of sampling, there's no sample reducing by lot. only parts.