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.

Question

Quizplus · Accepted Answer

Control charts for variables often use averages of small samples to monitor the process variability and mean. This approach allows for the detection of shifts in the process mean or increases in variability over time.

Control Charts for Variables Are Based on Data That Come