Table 2 ATS values of optimal np, traditional np, EWMA and synthetic charts.
From: Economic statistical model of the np chart for monitoring defectives
\(\delta\) | ATS | |||
|---|---|---|---|---|
Traditional np chart | Optimal np chart | EWMA chart | Synthetic chart | |
1 | 626.498 | 311.810 | 301.719 | 311.54798 |
2 | 55.812 | 30.765 | 15.151 | 26.44278 |
3 | 15.434 | 9.264 | 5.566 | 9.17749 |
4 | 6.687 | 4.309 | 3.305 | 5.04107 |
5 | 3.674 | 2.521 | 2.309 | 3.37530 |
6 | 2.335 | 1.704 | 1.770 | 2.54143 |
7 | 1.640 | 1.275 | 1.454 | 2.07189 |
8 | 1.240 | 1.030 | 1.209 | 1.78785 |
9 | 0.993 | 0.884 | 1.039 | 1.60821 |
10 | 0.834 | 0.794 | 0.917 | 1.49157 |
