What is an R chart used for?
A)To monitor the center of a process
B)To monitor the spread of a process
C)To monitor both the center and spread of a process
D)To monitor the correlation of a process

Question

Quizplus · Accepted Answer

An R chart, or range chart, is used to monitor the spread of a process by tracking the range of variation within subgroups of data. It is not used to monitor the center of a process, correlation of a process, or both the center and spread of a process (which would require an X-R chart or individuals and moving range chart).

What Is an R Chart Used For