find the standard deviation of a list of numbers in php

To find the standard deviation of a list of numbers in PHP, you can use the stats_standard_deviation function. This function calculates the standard deviation of the values in an array.

Here is an example code block:

main.php
<?php
// Define an array of numbers
$numbers = array(2, 4, 6, 8, 10);

// Calculate the standard deviation of the numbers
$standard_deviation = stats_standard_deviation($numbers);

// Output the standard deviation
echo "The standard deviation is: " . $standard_deviation;
?>
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The output of this code would be:

main.php
The standard deviation is: 2.8284271247462
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In this example, we first define an array of numbers. We then use the stats_standard_deviation function to calculate the standard deviation of the numbers. Finally, we output the standard deviation using echo.

Note that the stats_standard_deviation function requires the PHP extension stats to be enabled in order to work.