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Quality and Process Methods > CUSUM Control Charts > Statistical Details for the CUSUM Control Chart Platform > Statistical Details for Shift Detection
Publication date: 05/05/2023

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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