Cusum
Properties
| Decision | Gets the decision interval h. The process is flagged out of control when C⁺ or C⁻ exceeds this threshold. |
| Lower | Gets the lower cumulative sum series C⁻. |
| Observations | Gets the baseline observations used to fit this chart. |
| Reference | Gets the reference value (allowance) k used to compute the cumulative sums. |
| Sigma | Gets the process sigma estimate used to standardize observations in the CUSUM recursion. |
| State |
Gets the current lifecycle state of this chart.
(Inherited from ControlChart) |
| Target | Gets the target value (μ₀) used as the center line for the CUSUM recursion. |
| Upper | Gets the upper cumulative sum series C⁺. |