var_wtd_mean_cochran: Computes the variance of a weighted mean following the...

Description Usage Arguments Value References

Description

This is a helper method for weighted variance computation in origin_edm, which is the closest to the bootstrap.

Usage

1

Arguments

x

numeric vector of values

w

numeric vector of weights

Value

numeric value of weighted variance

References

  • Gatz, D. F., and Smith, L. (1995). The standard error of a weighted mean concentration-I. Bootstrapping vs other methods. Atmospheric Environment, 29(11), 1185-1193. <DOI: 10.1016/1352-2310(94)00210-C>

  • Gatz, D. F., and Smith, L. (1995). The standard error of a weighted mean concentration-II. Estimating confidence intervals. Atmospheric Environment, 29(11), 1195-1200. <DOI: 10.1016/1352-2310(94)00209-4>

  • http://r.789695.n4.nabble.com/Problem-with-Weighted-Variance-in-Hmisc-td826437.html



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