When monitoring a process's output with a quantitative variable either an R-chart or an -)chart is used,but never both.

Question

When monitoring a process's output with a quantitative variable either an R-chart or an  -)chart is used,but never both.

Quizplus · Accepted Answer

Both an R-chart and an X-bar chart (not an 11ea8b1d_2036_406e_b2e9_19bd1b4fb014_TB5643_11 -) chart) can be used to monitor a process's output with a quantitative variable. The R-chart is used to monitor the variability or dispersion of the process, while the X-bar chart is used to monitor the process mean. Both charts should be used together in some cases to provide a complete picture of the process.

When Monitoring a Process's Output with a Quantitative Variable Either