The three sigma limit is statistical data within three standard deviations from a mean. Three sigma limits set the upper and lower control limits in statistical quality control charts. Data above ...

Control charts have two general uses in an improvement project. Undeniably, the most common application is as a tool to monitor process stability and control. A less common, although some might ...

Youíll learn how to select the right attribute data control chart, and how to create those control charts. These include the NP Chart, the P Chart, the U Chart and the C Chart. To do this you must ...

In an attempt to improve the procedures for statistical process control many researchers have developed and proposed a variety of adaptive control charts in the last decade. The common characteristic ...

Sankhyā: The Indian Journal of Statistics, Series B (1960-2002), Vol. 61, No. 2 (Aug., 1999), pp. 351-365 (15 pages) We develop a statistical model for the design of multivariate control charts (MACCS ...