Multiple sampling plan is the one where there is a possibility of taking more than two samples before the decisions to accept or reject the lot is reached. This is an extension of the double sampling plan and specified by lot size ‘N’.

Subsequent sample sizes = (n1, n2 …)

Subsequent acceptance numbers = (c1, c2 …)

First and subsequent rejection number = (f1, f2 …)

Second sample size = n2

Second acceptance number = c2

Second rejection number = f2


For the two samples combined and so on.


MULTIPLE SAMPLE PLAN