Research Article
Estimation in Step-Stress Accelerated Life Tests for Power Generalized Weibull Distribution with Progressive Censoring
Table 5
MSEs of the estimates of
,
, and
with true values
,
,
, and
.
| | | | C.S | | | | | | | | | | | | | | | |
| 15 | 9 | 3 | | 0.0723 | 0.0281 | 0.0239 | 0.0176 | 0.0178 | 0.5822 | 0.0702 | 0.0761 | 0.0471 | 0.0447 | 0.7012 | 0.3910 | 0.4080 | 0.6077 | 0.6077 | | | | | | | | 0.0424 | 0.0212 | 0.0171 | 0.0173 | 0.0162 | 0.3577 | 0.0647 | 0.0718 | 0.0384 | 0.0396 | 0.7016 | 0.3738 | 0.3838 | 0.5969 | 0.5835 | | | | | | | | 0.0442 | 0.0223 | 0.0215 | 0.0191 | 0.0175 | 0.3798 | 0.0690 | 0.0725 | 0.0495 | 0.0537 | 0.7121 | 0.4462 | 0.5315 | 0.6221 | 0.5825 |
| 15 | 12 | 4 | | 0.0378 | 0.0217 | 0.0187 | 0.0125 | 0.0125 | 0.5772 | 0.0654 | 0.0688 | 0.0306 | 0.0311 | 0.6205 | 0.3270 | 0.3917 | 0.4611 | 0.4374 | | | | | | | | 0.0243 | 0.0211 | 0.0157 | 0.0122 | 0.0119 | 0.2604 | 0.0639 | 0.0674 | 0.0284 | 0.0280 | 0.5942 | 0.2668 | 0.3698 | 0.4408 | 0.5013 | | | | | | | | 0.0300 | 0.0219 | 0.0193 | 0.0138 | 0.0131 | 0.3727 | 0.0654 | 0.0718 | 0.0358 | 0.0327 | 0.6166 | 0.3043 | 0.4191 | 0.4203 | 0.4414 |
| 25 | 15 | 5 | | 0.0288 | 0.0212 | 0.0207 | 0.0111 | 0.0110 | 0.0870 | 0.0589 | 0.0501 | 0.0225 | 0.0244 | 0.5576 | 0.4094 | 0.3854 | 0.3966 | 0.4056 | | | | | | | | 0.0178 | 0.0188 | 0.0145 | 0.0107 | 0.0097 | 0.0710 | 0.0568 | 0.0476 | 0.0200 | 0.0203 | 0.6650 | 0.2650 | 0.2656 | 0.3965 | 0.4154 | | | | | | | | 0.0354 | 0.0192 | 0.0212 | 0.0128 | 0.0120 | 0.0903 | 0.0558 | 0.0498 | 0.0299 | 0.0277 | 0.6547 | 0.3718 | 0.4065 | 0.3766 | 0.4158 |
| 25 |
20 | 7 | | 0.0200 | 0.0189 | 0.0155 | 0.0081 | 0.0075 | 0.0685 | 0.0491 | 0.0462 | 0.0180 | 0.01776 | 0.5491 | 0.3811 | 0.3620 | 0.3128 | 0.2705 | | | | | | | | 0.0197 | 0.0159 | 0.0138 | 0.0073 | 0.0071 | 0.0682 | 0.0453 | 0.0421 | 0.0174 | 0.0165 | 0.6551 | 0.2645 | 0.2535 | 0.3107 | 0.2921 | | | | | | | | 0.0236 | 0.0191 | 0.0151 | 0.0093 | 0.0083 | 0.0787 | 0.0465 | 0.0489 | 0.0189 | 0.0199 | 0.5472 | 0.3656 | 0.3391 | 0.2980 | 0.2881 |
| 50 | 30 | 10 | | 0.0223 | 0.0180 | 0.0133 | 0.0061 | 0.0066 | 0.0255 | 0.0366 | 0.0372 | 0.0124 | 0.0120 | 0.4730 | 0.4049 | 0.3208 | 0.2269 | 0.2256 | | | | | | | | 0.0142 | 0.0149 | 0.0107 | 0.0056 | 0.0056 | 0.0295 | 0.0308 | 0.0284 | 0.0103 | 0.0100 | 0.5914 | 0.2250 | 0.2531 | 0.2258 | 0.2164 | | | | | | | | 0.0145 | 0.0184 | 0.0150 | 0.0078 | 0.0076 | 0.0266 | 0.0382 | 0.0323 | 0.0145 | 0.0144 | 0.6192 | 0.3616 | 0.3361 | 0.2259 | 0.2188 |
| 50 | 40 | 15 | | 0.0175 | 0.0160 | 0.0107 | 0.0049 | 0.0045 | 0.0228 | 0.0332 | 0.0322 | 0.0085 | 0.0094 | 0.5199 | 0.2791 | 0.2576 | 0.1657 | 0.1676 | | | | | | | | 0.0153 | 0.0124 | 0.0087 | 0.0042 | 0.0043 | 0.0245 | 0.0275 | 0.0273 | 0.0076 | 0.0079 | 0.5537 | 0.2213 | 0.2335 | 0.1790 | 0.1804 | | | | | | | | 0.0128 | 0.0163 | 0.0098 | 0.0050 | 0.0048 | 0.0353 | 0.0332 | 0.0274 | 0.0092 | 0.0102 | 0.5110 | 0.3434 | 0.3016 | 0.1615 | 0.1510 |
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