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.
Lemonade is also an important ingredient in the Pimm's Cup cocktail and is a popular drink mixer. In the UK and other places the American-style drink is often called traditional lemonade or homemade lemonade. Carbonated versions of this are also sold commercially as cloudy or traditional lemonade.