Jan 28, 2025 · How do you know which control charts to use for an improvement project? Our guide can help you identify which works best for your needs.

Jan 30, 2025 · In this example, a manager is using a control chart to measure the average time to answer a customer question on a helpline. The manager collected about 20 samples of call …

Apr 18, 2023 · A CUSUM (cumulative sum) chart is a type of control chart used to monitor the deviation from a target value.

Measurement system: gages, fixtures, tools, and/or test equipment required to measure the part or process. Sample size and frequency Control method: statistical process control, inspection, …

Oct 11, 2024 · How do you construct a p-chart? Learn all about how to utilize and construct this useful tool in testing nonconformance among data.

Sep 14, 2015 · Many quality professionals have declared that pre-control charts have gone the way of the Dodo bird. Before writing them off, however, learn more about pre-control charts …

Oct 12, 2005 · Steps in Constructing an np-Chart: The np Chart can be used for the special case when the subgroups are of equal size. Then it is not necessary to convert nonconforming …

Oct 29, 2024 · Looking to build your own X-bar and R-control chart? Our article covers every possible action you'll need to take to make your own.

The control limits for the Xbar chart are given below. The X with the two lines above ("X double bar") is the overall average; Rbar is the average range and A2 is control chart constant that …

Oct 21, 2024 · What is an I-MR Chart? Find out how these control charts can clue you into process stability as well as point out any errors in your workflow.