wtd.mean | R Documentation |
Compute the weighted mean or weighted variance of a vector. Exact copies of Hmisc functions.
wtd.mean(x, weights = NULL, na.rm = TRUE)
x |
Numeric data vector |
weights |
Numeric weights vector. Must be the same length as |
na.rm |
if |
If weights
is NULL
, then an uniform weighting is applied.
These functions are exact copies of the wtd.mean
and wtd.var
function from the wtd.stats package. They have been created by
Frank Harrell, Department of Biostatistics, Vanderbilt University School of
Medicine, <f.harrell@vanderbilt.edu>.
mean
,var
, wtd.table
and the survey
package.
data(hdv2003) mean(hdv2003$age) wtd.mean(hdv2003$age, weights=hdv2003$poids)
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