| median {stats} | R Documentation |
Compute the sample median.
median(x, na.rm = FALSE)
x |
an object for which a method has been defined, or a numeric vector containing the values whose median is to be computed. |
na.rm |
a logical value indicating whether |
This is a generic function for which methods can be written. However,
the default method makes use of sort and mean from
package base both of which are generic, and so the default
method will work for most classes (e.g. "Date") for
which a median is a reasonable concept.
The default method returns a length-one object of the same type as
x, except when x is integer of even length, when the
result will be double.
If there are no values or if na.rm = FALSE and there are NA
values the result is NA of the same type as x (or more
generally the result of x[FALSE][NA]).
Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.
quantile for general quantiles.
median(1:4)# = 2.5 [even number] median(c(1:3,100,1000))# = 3 [odd, robust]