| Estimator | Bias | Mean Squared Error | Constant |
| Kadilar and Cingi [14] | | | |
| Kadilar and Cingi [14] | | | |
| Kadilar and Cingi [14] | | | |
| Kadilar and Cingi [14] | | | |
| Kadilar and Cingi [14] | | | |
| Kadilar and Cingi [15] | | | |
| Kadilar and Cingi [15] | | | |
| Kadilar and Cingi [15] | | | |
| Kadilar and Cingi [15] | | | |
| Kadilar and Cingi [15] | | | |
| Yan and Tian [16] | | | |
| Yan and Tian [16] | | | |