A control chart plots measured values along with upper and lower quality control limits. Values appearing outside these limits are unacceptable and could indicate a manufacturing problem. Although ...

Fuzzy control charts represent a significant evolution in Statistical Process Control (SPC) by addressing intrinsic uncertainties in measurement and human evaluation that classical approaches often ...

The use of multiple control limits and multiple corresponding levels of response for processes is an effective way for statistical process control when different assignable causes exist which lead to ...

The extent to which products meet specifications needs to be systematically monitored in a production process. Product quality will typically be defined by two quantities: deviations from stated ...

An effective ASC infection control program must be robust. It should involve many individuals at the ASC, from staff members all the way up through leadership. It must also include many different ...

The cumulative sum chart for controlling the mean of a manufacturing process having normally distributed quality with known variance is studied. The costs of repairing the process, of operating out-of ...