Control charts for variables are based on data that come from

A) acceptance sampling.
B) individual items.
C) averages of small samples.
D) averages of large samples.
E) the entire lot.

Variables

Elements, features, or factors that are liable to vary or change, often measured, manipulated, or controlled in scientific studies.

Averages

A mathematical concept denoting the central or typical value in a set of data, calculated in various ways such as mean, median, and mode.