# var.linear

0th

Percentile

##### Linear Variance Estimate

Estimates the variance of a statistic from its empirical influence values.

Keywords
nonparametric
##### Usage
var.linear(L, strata = NULL)
##### Arguments
L

Vector of the empirical influence values of a statistic. These will usually be calculated by a call to empinf.

strata

A numeric vector or factor specifying which observations (and hence empirical influence values) come from which strata.

##### Value

The variance estimate calculated from L.

##### References

Davison, A. C. and Hinkley, D. V. (1997) Bootstrap Methods and Their Application. Cambridge University Press.

empinf, linear.approx, k3.linear

• var.linear
##### Examples
# NOT RUN {
#  To estimate the variance of the ratio of means for the city data.
ratio <- function(d,w) sum(d$x * w)/sum(d$u * w)
var.linear(empinf(data = city, statistic = ratio))
# }

Documentation reproduced from package boot, version 1.3-24, License: Unlimited

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