© 1994 by Biometrika Trust
Monte Carlo approximation and the iterated bootstrap
1Department of Statistics, University of Florida Gainesville, Florida 32611, U. S.A.
2Centre for Mathematics and Its Applications, Australian National University Canberra, ACT 0200, Australia
We discuss optimal choice of the numbers of resamples in the two stages of the iterated bootstrap, when that technique is used to calibrate bootstrap confidence intervals. If the numbers of resamples in the first and second stages are denoted by B and C respectively, we show that it is optimal to take C to be approximately a constant multiple of B
. The value of the constant is derived, and shown to depend only on the nominal coverage level of a confidence interval. However, it assumes different values in the cases of one- and two-sided intervals.
Key Words: Asymptotic distribution Calibration coefficient Confidence interval Coverage function Double bootstrap Iterated bootstrap Monte Carlo approximation Percentile method Resample Simulation