Select tests for special causes for EWMA Chart

Stat > Control Charts > Time-Weighted Charts > EWMA > EWMA Options > Tests

The EWMA chart uses one test to detect out-of-control points. Select 1 point > K standard deviations from center line to determine which observations to investigate and identify the specific patterns and trends in your data. You can make the test more or less sensitive by changing the value of K.

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