As a thumb rule a minimum of 50 randomly selected samples must be chosen for. process performance studies and a minimum of 20 subgroups (of sample size, preferably of at least 4 or 5) must be chosen for process capability studies.
: a usually iced drink of wine or distilled liquor mixed with flavoring ingredients. : something resembling or suggesting such a drink as being a mixture of often diverse elements or ingredients. : a mixture of agents usually in solution that is taken or used especially for medical treatment or diagnosis. : of, relating to, or set aside for cocktails. : designed for semiformal wear.
Pimms is a fruit cup (a type of English specialty drink) that is often considered to be a liqueur. There are several types and all are usually mixed with gin, although vodka is used for some. It's rarely consumed alone and is mixed with hard alcohol and often garnished with fruit, hence the name.