Control charts have two general uses in an improvement project. Undeniably, the most common application is as a tool to ...

2 types of variation and how we distinguish between common and special cause variation, along with how to create a rational subgroup. We also cover the equations and constants for the X-bar and R ...

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 this paper we derive the operating characteristic of the control chart for sample means when process standards are unspecified. Under the null hypothesis the distribution of the process is N(μ, σ2) ...

The following statements create a SAS data set named CIRC_ONE, which contains the number of failing circuits for 30 batches produced by the circuit manufacturing process introduced in the "Getting ...