Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Library: stats
See also: median quantilecl meancl

Quantlet: mediancl
Description: Computes the empirical medians of a classified data set.

Usage: med = mediancl(gr, fr)
Input:
gr m x n grid matrix, each column must be ordered ascendently
fr (m-1) x n matrix of frequencies for each interval in each column
Output:
med 1 x n row vector of medians for each column

Note:

Example:
library("stats")
randomize(666)
; make four columns each with 15 random intervals
gr = sort(normal(5,4)|5+normal(5,4)|10+normal(5,4),0)
gr[,3] = 10 + gr[,3]
fr = ceil(30*uniform(14)~20*uniform(14,2)~2*uniform(14))
mediancl(gr,fr)

Result:
Contents of med
[1,]   5.7963   4.8599   15.313   3.9398



Author: K. Komorad, W. Haerdle, 20010716. license MD*Tech
(C) MD*TECH Method and Data Technologies, 05.02.2006