A company is interested in monitoring the variability in the weight of the fertilizer bags it produces. An appropriate control chart would be:
A) $ \bar{x} $ chart.
B) a p-chart.
C) a c-chart.
D) an R-chart.

Question

Quizplus · Accepted Answer

An R-chart (range chart) is the best choice for monitoring variability in weight because it shows the range of variation within each subgroup of samples. This helps identify any process changes or shifts in the variability of the weight of the fertilizer bags. A $ \bar{x} $ chart (a mean chart) is used to monitor changes in the process mean, while a p-chart (proportion chart) and a c-chart (count chart) are used to monitor the proportion or count of defects in a sample, respectively.

A Company Is Interested in Monitoring the Variability in the Weight