Research Article
New One-Sided EWMA t Charts without and with Variable Sampling Intervals for Monitoring the Process Mean
Table 2
The LCL− of the L-NEWMA t chart when ARL0 = 200.
| λ | n = 5 | n = 7 | n = 9 | n = 11 |
| 0.10 | −0.6811 | −0.5958 | −0.5614 | −0.5430 | 0.20 | −1.1493 | −0.9854 | −0.9227 | −0.8880 | 0.30 | −1.5763 | −1.3314 | −1.2367 | −1.1838 | 0.40 | −1.9932 | −1.6610 | −1.5315 | −1.4634 | 0.50 | −2.4137 | −1.9866 | −1.8214 | −1.7343 | 0.75 | −3.4872 | −2.8192 | −2.5577 | −2.4219 | 0.90 | −4.1474 | −3.3416 | −3.0280 | −2.8575 | 1.00 | −4.5961 | −3.7043 | −3.3526 | −3.1667 |
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