The R-chart monitors the variability in the data over time by plotting the ________.
A)mean of each sample
B)range of each sample
C)sum of each sample
D)size of each sample

Question

Quizplus · Accepted Answer

The R-chart plots the range of each individual sample over time. This helps to monitor the variability or dispersion within the data set. The mean of each sample (A) would be useful for a different control chart, such as the X-bar chart. The sum of each sample (C) and the size of each sample (D) are not relevant for the R-chart.

The R-Chart Monitors the Variability in the Data Over Time