Rules | Condition assessed |
Rule #1 | When a point falls outside UCLx, denoted as 11s. |
Rule #2 | At least 2 points out of 3 are in zone A. |
Rule #3 | 3 out of five consecutive points on a control chart fall above XB. |
Rule #4 | 8 consecutive points above XB (in Zones B, or A or beyond). |
Rule #5 | 6 consecutive points decreasing or increasing. In this case only a decreasing scenario was used. |