| Tabular Cusum Charts are
a variation on the
Cusum Chart. The problem with
using Cusum charts for continuous monitoring
is that slight deviations between the target
and actual process average will cause a
drift. Tabular cusum charts provide a 'slack'
or tolerance band around the target. Excursions
within this band will not be recorded. The
band is often 1 standard deviation wide:
|
