How to Use Microsoft Excel to Draw Control Charts and Graphs. A control chart plots measured values along with upper and lower quality control limits.

These are typically captured using a control chart -- a statistical tool used in manufacturing or business to show the extent of the variation in a process.

Control charts for monitoring the process mean μ and process standard deviation σ are often based on samples of n > 1 observations, but in many applications individual observations are used (n = 1).

The control chart basics.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 ...

Process inspection schemes using control charts with warning lines are considered and the properties for some schemes based on the observations from the last few samples are evaluated. Tables of ...

The control chart is potentially a sensitive method to detect anomaly in the cases of postcataract surgery endophthalmitis.