#### Subgroup Chart

Subgroup Charts show subgroup range, subgroup median value, subgroup mean, and/or subgroup standard deviation. Two additional statistical parameters, CP and CPK, also appear on the chart.

Available Subgroup Charts are the XBar & R Chart, XBar & S Chart, and XTilde & R Chart.

Just same with Individual Chart you can control the number of individual observations per subgroup by using subgroup parameters.

You can change the type of subgroup chart displayed by using the Configure Charts dialog box described in the "Control Charts" topic.

Sample Chart

See also:

- XBAR & R Chart

- XBAR & S Chart

- X Tilde & R Chart

- Subgroup Parameters

- Control Limits

- Capability Indexes: Table of Calculations

- Chart Display - Control Chart