Table 2.
Performance measures for estimating polyserial correlation coefficients in the simulation in Section 7.1 at significance level (averaged across 5,000 repetitions)
| Point estimate | Standard error | Confidence interval | ||||||
|---|---|---|---|---|---|---|---|---|
| Contamination | Bias | SD | Bias | Coverage | Length | |||
| 0 (MLE) | 0.500 | 0.000 | 0.035 | 0.036 | 0.001 | 0.951 | 0.142 | |
| 0.1 | 0.500 | 0.000 | 0.036 | 0.036 | 0.000 | 0.948 | 0.141 | |
| 0.25 | 0.499 | 0.037 | 0.037 | 0.000 | 0.949 | 0.147 | ||
| 0.5 | 0.499 | 0.041 | 0.041 | 0.000 | 0.950 | 0.162 | ||
| 0.75 | 0.499 | 0.046 | 0.046 | 0.001 | 0.951 | 0.182 | ||
| 1 | 0.500 | 0.000 | 0.051 | 0.052 | 0.001 | 0.953 | 0.205 | |
| 0 (MLE) | 0.416 | 0.035 | 0.039 | 0.003 | 0.395 | 0.152 | ||
| 0.1 | 0.499 | 0.036 | 0.036 | 0.000 | 0.948 | 0.141 | ||
| 0.25 | 0.499 | 0.037 | 0.037 | 0.000 | 0.950 | 0.147 | ||
| 0.5 | 0.499 | 0.041 | 0.041 | 0.000 | 0.949 | 0.162 | ||
| 0.75 | 0.499 | 0.046 | 0.046 | 0.001 | 0.951 | 0.182 | ||
| 1 | 0.499 | 0.051 | 0.052 | 0.001 | 0.953 | 0.205 | ||
| 0 (MLE) | 0.215 | 0.033 | 0.057 | 0.024 | 0.000 | 0.224 | ||
| 0.1 | 0.499 | 0.036 | 0.036 | 0.000 | 0.947 | 0.142 | ||
| 0.25 | 0.499 | 0.037 | 0.038 | 0.000 | 0.950 | 0.147 | ||
| 0.5 | 0.499 | 0.041 | 0.041 | 0.001 | 0.951 | 0.162 | ||
| 0.75 | 0.499 | 0.046 | 0.046 | 0.001 | 0.953 | 0.182 | ||
| 1 | 0.499 | 0.051 | 0.052 | 0.001 | 0.953 | 0.205 | ||
| 0 (MLE) | 0.032 | 0.073 | 0.042 | 0.000 | 0.287 | |||
| 0.1 | 0.497 | 0.037 | 0.037 | 0.000 | 0.949 | 0.146 | ||
| 0.25 | 0.498 | 0.038 | 0.038 | 0.000 | 0.948 | 0.150 | ||
| 0.5 | 0.497 | 0.041 | 0.042 | 0.000 | 0.947 | 0.164 | ||
| 0.75 | 0.496 | 0.046 | 0.047 | 0.001 | 0.951 | 0.183 | ||
| 1 | 0.496 | 0.051 | 0.052 | 0.001 | 0.953 | 0.204 | ||
| 0 (MLE) | 0.030 | 0.063 | 0.033 | 0.000 | 0.248 | |||
| 0.1 | 0.494 | 0.039 | 0.039 | 0.000 | 0.948 | 0.151 | ||
| 0.25 | 0.497 | 0.039 | 0.039 | 0.000 | 0.950 | 0.154 | ||
| 0.5 | 0.494 | 0.042 | 0.043 | 0.000 | 0.948 | 0.167 | ||
| 0.75 | 0.492 | 0.046 | 0.047 | 0.001 | 0.950 | 0.183 | ||
| 1 | 0.491 | 0.051 | 0.052 | 0.001 | 0.952 | 0.202 | ||
| 0 (MLE) | 0.027 | 0.059 | 0.032 | 0.000 | 0.233 | |||
| 0.1 | 0.369 | 0.327 | 0.042 | 0.830 | 0.164 | |||
| 0.25 | 0.495 | 0.040 | 0.040 | 0.000 | 0.948 | 0.157 | ||
| 0.5 | 0.490 | 0.043 | 0.043 | 0.000 | 0.948 | 0.170 | ||
| 0.75 | 0.487 | 0.046 | 0.047 | 0.001 | 0.948 | 0.184 | ||
| 1 | 0.485 | 0.050 | 0.051 | 0.001 | 0.949 | 0.201 | ||
| 0 (MLE) | 0.024 | 0.060 | 0.035 | 0.000 | 0.234 | |||
| 0.1 | 0.078 | 0.037 | 0.004 | 0.145 | ||||
| 0.25 | 0.493 | 0.041 | 0.041 | 0.000 | 0.947 | 0.162 | ||
| 0.5 | 0.486 | 0.044 | 0.044 | 0.000 | 0.945 | 0.172 | ||
| 0.75 | 0.481 | 0.047 | 0.047 | 0.000 | 0.941 | 0.185 | ||
| 1 | 0.478 | 0.050 | 0.051 | 0.001 | 0.939 | 0.199 | ||
| 0 (MLE) | 0.020 | 0.063 | 0.043 | 0.000 | 0.247 | |||
| 0.1 | 0.021 | 0.024 | 0.003 | 0.000 | 0.094 | |||
| 0.25 | 0.464 | 0.171 | 0.043 | 0.926 | 0.170 | |||
| 0.5 | 0.475 | 0.045 | 0.046 | 0.000 | 0.923 | 0.179 | ||
| 0.75 | 0.464 | 0.047 | 0.048 | 0.001 | 0.901 | 0.187 | ||
| 1 | 0.456 | 0.049 | 0.050 | 0.001 | 0.882 | 0.196 | ||
| 0 (MLE) | 0.018 | 0.065 | 0.047 | 0.000 | 0.257 | |||
| 0.1 | 0.022 | 0.019 | 0.000 | 0.073 | ||||
| 0.25 | 0.024 | 0.019 | 0.000 | 0.074 | ||||
| 0.5 | 0.500 | 0.027 | 0.191 | 0.106 | ||||
| 0.75 | 0.440 | 0.058 | 0.056 | 0.772 | 0.221 | |||
| 1 | 0.468 | 0.074 | 0.127 | 0.053 | 0.818 | 0.498 | ||
| 0 (MLE) | 0.017 | 0.066 | 0.049 | 0.000 | 0.260 | |||
| 0.1 | 0.016 | 0.016 | 0.000 | 0.000 | 0.064 | |||
| 0.25 | 0.015 | 0.015 | 0.000 | 0.000 | 0.059 | |||
| 0.5 | 0.014 | 0.014 | 0.000 | 0.000 | 0.053 | |||
| 0.75 | 0.038 | 0.031 | 0.001 | 0.118 | ||||
| 1 | 0.676 | 0.122 | 0.007 | 0.478 | ||||