Business Statistics

662 Business Statistics

17.9.3  Multiple-Sample Plan

The multiple-sample plan is an extension of the single-sample plan and the double-sample plan. In a

multiple-sample plan, the decision to accept or reject the lot is based on three or more samples taken

in a sequence. In this sampling plan, the cumulative total of the number of rejects x

i

is compared to an

acceptance number c

i

after each sample is taken. If the cumulative total of number of rejects x

i

is less

than or equal the value of c

i

, the lot is accepted. If the cumulative total of number of rejects x

i

is greater

than the value of r

i

, the lot is rejected. If the cumulative total of number ...