agg.wtd.mean | R Documentation |
Splits the data into subsets (according to the levels of a factor) and computes the weighted mean for each
agg.wtd.mean(x, by, weights = NULL, na.rm = FALSE)
x |
numeric vector or data frame of numeric vectors |
by |
factor used to split the data |
weights |
numeric vector of weights. If NULL (default), uniform weights (i.e. all equal to 1) are used. |
na.rm |
logical, indicating whether NA values should be silently removed before the computation proceeds. Default is FALSE. |
a data frame
Nicolas Robette
agg.wtd.var
data(Movies)
agg.wtd.mean(Movies[,c("Critics", "BoxOffice")], by = Movies$Country)
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