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Publication date: 04/21/2023

Statistical Details for Shift Detection

This section defines positive and negative shift detection for the CUSUM Chart.

A positive shift occurs when the value of C+ exceeds the upper limit on the chart. The start of the shift is defined as the first point after the most recent zero value for C+.

A negative shift occurs when the value of C- exceeds the lower limit on the chart. The start of the shift is defined as the first point after the most recent zero value for C-.

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