| weighted.mean {stats} | R Documentation |
Compute a weighted mean of a numeric vector.
weighted.mean(x, w, na.rm=FALSE)
x |
a numeric vector containing the values whose mean is to be computed. |
w |
a vector of weights the same length as x giving
the weights to use for each element of x. |
na.rm |
a logical value indicating whether NA
values in x should be stripped before the computation proceeds. |
If w is missing then all elements of x are
given the same weight.
Missing values in w are not handled.
## GPA from Siegel 1994 wt <- c(5, 5, 4, 1)/15 x <- c(3.7,3.3,3.5,2.8) xm <- weighted.mean(x,wt)