The usual practice in using a control chart to monitor a profile is to take

samples from the process with fixed sampling intervals. This article considered

the use of generalized likelihood ratio (GLR) chart with a variable sampling...

Traditional multiple deferred state (MDS) sampling plan by variable is not able to decide about lots of products whose proportion parameter (p) is uncertain. In this study, fuzzy MDS (FMDS) variable sampling plan is proposed when p is not precise...