Table 1 Ranking of different estimators of location based on the results of the simulations. Rankings shown here are those involving estimator bias, each with normal contamination centered at twice the 99th percentile and with a sample size 100. The first group of three columns shows the average rank for all different levels of contamination. The other two groups of columns show rankings for 10% and 30% levels of contamination. Smaller rank numbers indicate lower bias.
From: Comparison of mode estimation methods and application in molecular clock analysis
Rank | Average | 10% contamination | 30% contamination | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Â | N = 20 | N = 100 | N = 1000 | N = 20 | N = 100 | N = 1000 | N = 20 | N = 100 | N = 1000 |
Normal original distribution | |||||||||
RPM | 3 | 2 | 2 | 3 | 2 | 2 | 3 | 2 | 3 |
HRM | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
SPM | 2 | 4 | 4 | 2 | 4 | 3 | 2 | 4 | 4 |
Median | 4 | 3 | 3 | 4 | 3 | 4 | 4 | 3 | 2 |
Mean | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
Lognormal original distribution | |||||||||
RPM | 1 | 2 | 2 | 1 | 1 | 2 | 1 | 1 | 1 |
HRM | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 3 |
SPM | 2 | 1 | 1 | 2 | 2 | 1 | 3 | 2 | 2 |
Median | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
Mean | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |