Jars of pickles are sampled and weighed. Sample measures are plotted on control charts. The ideal weight should be precisely 11 oz. Which type of chart(s) would you recommend?
A) p-chart
B) c-chart
C) both an x-bar chart and an R-chart
D) an x-bar chart, but not an R-chart
E) both a p-chart and a c-chart

Question

Quizplus · Accepted Answer

Since the weight of the jars of pickles is continuous data, an x-bar chart and an R-chart will be appropriate for monitoring the mean and range of the weights. The ideal weight should be precisely 11 oz, so we want to monitor any deviations from this value. A p-chart and c-chart are suitable for attribute data, where the focus is on the proportion of nonconforming items or the count of nonconforming items, respectively. Therefore, the best option is an x-bar chart and an R-chart.

Jars of Pickles Are Sampled and Weighed