What is the definition of rational subgroups?
A)They are those parts of a process that are identified as most likely to be special causes.
B)They are samples chosen to reflect only item-to-item variation in a process.
C)They are those samples in an s chart that are in control.
D)They are the specific groups of charts that we use to monitor a process.

Question

Quizplus · Accepted Answer

Rational subgroups are designed to minimize the variation within subgroups and maximize the variation between subgroups to effectively monitor and identify any special causes of variation in a process. They reflect item-to-item variation, helping in understanding the process variability more accurately.

What Is the Definition of Rational Subgroups