Quality and Process Methods • Control Chart Builder • Excluded and Hidden Samples
Previous
 • 
Next
Excluded and Hidden Samples
The following bullets summarize the effects of various conditions on samples and subgroups:
•
Excluded subgroups are not used in the calculations, but appear in the chart (although dimmed).
•
Hidden observations are used in the calculations, but do not appear in the chart.
•
Both hidden and excluded rows are included in the count of points for Tests for Special Causes. An excluded row can be labeled with a special cause flag. A hidden point cannot be labeled. If the flag for a Tests for Special Causes is on a hidden point, it will not appear in the chart.
•
For partially excluded subgroups, if one or more observations within a subgroup is excluded, and at least one observation within the subgroup is included, the excluded observation is not included in the calculations of either the point statistic or the limits.
•
Checks for negative and non-integer data happen on the entire data (even excluded values).
•
Tests continue to apply to all excluded subgroups. Excluded samples are flagged when tests are turned on.

Previous
 • 
Next
Help created on 7/12/2018