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An estimate of the standard deviation based on within subgroup variation. The estimate is based on the control chart type that you specified, and is a short-term measure of variation. See Statistical Details for the Process Capability Platform in the Quality and Process Methods book for statistical details. If you select Medians instead of Means, Within Sigma is computed as described in Use Medians instead of Means.
(Appears only when 3-way chart is selected in the launch window.) An estimate of the standard deviation based on the variation between subgroups. See Statistical Details for the Process Capability Platform in the Quality and Process Methods book for statistical details.
The standard deviation specified by a sigma control limit in the Limits Specification dialog or an estimate of the standard deviation derived from the control limits and subgroup size. See Derived Sigma. The control limits and subgroup size can be specified using a limits table or a Control Limits column property.
Capability index based on Within Sigma or Between-and-Within Sigma and assuming a normal distribution. See Statistical Details for the Process Capability Platform in the Quality and Process Methods book for statistical details.
Capability index based on Overall Sigma and assuming a normal distribution. See Statistical Details for the Process Capability Platform in the Quality and Process Methods book for statistical details.
The spec centered mean. This is the same as the Mean Shift Standardized to Spec in Process Capability. See Goal Plot in the Quality and Process Methods book for statistical details.
The spec scaled standard deviation. This is the same as the Std Deviation Standardized to Spec in Process Capability. See Goal Plot in the Quality and Process Methods book for statistical details.