Method 95% CI Width
O_Chi (2.52,6.68) 4.16
Robust (4.49,12.92) 8.43
Bonett (2.31,4.85) 2.55
Steve (2.73,8.10) 5.37
Ln_A (2.46,5.45) 2.99
AdjDF (2.47,7.01) 4.54
B-C (2.47,7.49) 5.02
N_Boot (1.91,4.78) 2.87
P_Boot (2.84,7.29) 4.45
CT_B (1.13, 5.00) 3.87     
Table 7: Confidence intervals estimate of σ for age data example.