Modifying range or extent on an SPC trend rules

  1. Select Configuration > SPC > SPC Calculation Styles. The SPC Calculation Styles screen is displayed.
  2. Select a record and click SPC Trend Rules. The SPC Trend Rules in SPC Calculation Style screen is displayed at the bottom.
  3. Select a record and click Modify Range/Extent.
  4. Specify this information:
    Trend Range
    The number of subgroups that must meet the trend condition for the rule to apply.
    Trend Group
    The number of subgroups considered when evaluating the rule.
  5. Click OK.