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Mean, Median, Mode, Range Of An Array
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This function will take an array, and either display the: mean, median, mode, or range of the array.

Introduction


The function mmmr (Mean, Median, Mode, Range) will calculate the Mean, Median, Mode, or Range of an array.
The function automatically defaults to Mean (average).

int mmmr( array $array [, str $output] )

functions.php


<?php
function mmmr($array$output 'mean'){
    if(!
is_array($array)){
        return 
FALSE;
    }else{
        switch(
$output){
            case 
'mean':
                
$count count($array);
                
$sum array_sum($array);
                
$total $sum $count;
            break;
            case 
'median':
                
rsort($array);
                
$middle round(count($array) / 2);
                
$total $array[$middle-1];
            break;
            case 
'mode':
                
$v array_count_values($array);
                
arsort($v);
                foreach(
$v as $k => $v){$total $k; break;}
            break;
            case 
'range':
                
sort($array);
                
$sml $array[0];
                
rsort($array);
                
$lrg $array[0];
                
$total $lrg $sml;
            break;
        }
        return 
$total;
    }
}

$arr = array(12,33,23,4,20,124,4,2);

// Mean = The average of all the numbers
echo 'Mean: '.mmmr($arr).'<br>';
echo 
'Mean: '.mmmr($arr'mean').'<br>';

// Median = The middle value after the numbers are sorted smallest to largest
echo 'Median: '.mmmr($arr'median').'<br>';

// Mode = The number that is in the array the most times
echo 'Mode: '.mmmr($arr'mode').'<br>';

// Range = The difference between the highest number and the lowest number
echo 'Range: '.mmmr($arr'range');
?> 
 
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