Research Article

Estimating Alarm Thresholds for Process Monitoring Data under Different Assumptions about the Data Generating Mechanism

Figure 7

The RMSE versus sample size for (a) well-separated and (b) overlapping groups for a mixture of an unknown number of normals (same case as Figure 6, except the number of groups is unknown so it must be estimated).
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(a) Overlapping groups
705878.fig.007b
(b) Well-separated groups