Some commonly used options in this dialog box include:
· Curve Fit options used for the Individual-X chart and for Process Capability estimates.
· High Spec and Low Spec (specifications) for capability estimates. Note that only one spec limit is required for Cpk calculations.
· Auto Drop automatically drops out of control groups from the calculations. The groups are still shown on charts so process shifts are easily seen.
· Change Limits to use a subset of the data or pre-defined values for calculating control limits and capability indices for defined regions (steps) in the analysis.
This is the Chart Analysis Options dialog box:
