Median

Dependents

this module uses 1 subunits Smallest

Interface

Median

The median is the number in the middle of a set of numbers; that is, half the numbers have values that are greater than the median, and half have values that are less. If there is an even number of numbers in the set, then it calculates the average of the two numbers in the middle. In order to calculate the median, this algorithm uses the Smallest function.

Example:

#include <codecogs/statistics/moments/median.h>
#include <iostream>
int main()
{
  double
  x[6] = {0.2, 1.24, 0.5, 2.54, 2.3, 0.3},
  y[6] = {1, 2, 3.2, 4, 5},
  medx = Stats::Moments::median<double>(6, x),
  medy = Stats::Moments::median<double>(5, y);
  std::cout << "The median of the x array is: " << medx << std::endl;
  std::cout << "The median of the y array is: " << medy << std::endl;
  return 0;
}

Output:

The median of the x array is: 0.87
The median of the y array is: 3.2

References:

SUBSET, a library of C++ combinatorial routines, http://www.csit.fsu.edu/~burkardt/cpp_src/subset/subset.html

Parameters

n	the size of the population
data	the actual population given as an array

Returns

the median of the population

Authors

Anca Filibiu (August 2005)

Source Code

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