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Fixing loranz kurve

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This commit is contained in:
Dennis Eichhorn 2016-09-28 08:15:44 +02:00
parent 1222d53dbc
commit f8f2582d2e
1 changed files with 5 additions and 2 deletions
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7
Math/Finance/Lorenzkurve.php
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@ -35,9 +35,12 @@ class Lorenzkurve
$i = 1;
$n = count($data);
sort($data);
foreach ($data as $key => $value) {
$sum1 += $i * $value;
$sum2 += $value;
$sum1 += $i * $value;
$sum2 += $value;
$i++;
}
return 2 * $sum1 / ($n * $sum2) - ($n + 1) / $n;