Inconsistency in Failure Detection (Test 5: Reducing Variation) on X-bar Control Charts
Affected Module: Control Charts / SPC (Statistical Process Control)
Bug Description:
Test 5: Reducing Variation, which is intended to detect the Stratification pattern (low variation), exhibits inconsistent behavior when modifying the sensitivity criteria.
- Default Rule (Initial Behavior): When generating the x-bar-R Control Chart with the default settings for Test 5, the software correctly identifies a sequence of low variation and marks Points 16, 17, and 18
.