Resampling methods

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Resampling is any of a variety of methods for doing one of the following:

  • Estimating the precision of sample statistics (medians, variances, percentiles) by using subsets of available data (jackknifing) or drawing randomly with replacement from a set of data points (bootstrapping).
  • Exchanging labels on data points when performing significance tests (permutation tests, also called exact tests, randomization tests, or re-randomization tests)
  • Validating models by using random subsets (bootstrapping, cross validation)

Common resampling techniques include:

  • bootstrapping
  • jackknifing
  • permutation tests
  • cross-validation

See also

Statistical testing, Sampling

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