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Input: array (2, 3, 5, 6, 7) Output: 1.5620499351813 Input: array (1, 2, 3, 4, 5) Output: 1The following problem can be solved with the built-in functions

**PHP**. The built-in functions used to solve the above problem are as follows:

**array_sum ( )**: The function returns the sum of all the elements in the array.

**count()**: This function determines the number of elements currently present in the given array.

**sqrt()**: The function returns the square root of the specified number.

` `` `

` // function for calculating the standard deviation`

` // array elements`

` function`

` Stand_Deviation (`

` $arr`

`)`

` {`

` $num_of_elements`

` =`

` count`

` (`

` $arr`

`);`

` $variance`

` = 0.0;`

` // calculate the average using the array_sum() method`

` $average`

` =`

` array_sum`

` (`

` $arr`

`) /`

` $num_of_elements`

`;`

` foreach`

` (`

` $arr`

` as`

` $i`

`)`

` {`

` // sum of the squared differences between`

` // all numbers and means.`

` $variance`

` + = pow ((`

` $i`

` -`

` $average`

`), 2);`

`}`

` return`

` (float ) sqrt (`

` $variance`

` /`

` $num_of_elements`

`);`

`}`

` // input array`

` $arr`

` =`

` array`

` (2, 3, 5, 6, 7);`

` print_r (Stand_Deviation (`

` $arr`

`));`

`?>`

Output:1.8547236990991
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We hope this article has helped you to resolve the problem. Apart from PHP program for finding the standard deviation of an array, check other array Python module-related topics.

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Angelo Williams
San Francisco | 2023-02-07

I was preparing for my coding interview, thanks for clarifying this - PHP program for finding the standard deviation of an array in Python is not the simplest one. Will get back tomorrow with feedback

Angelo Galleotti
Moscow | 2023-02-07

Maybe there are another answers? What PHP program for finding the standard deviation of an array exactly means?. Will get back tomorrow with feedback

Schneider Lehnman
New York | 2023-02-07

Maybe there are another answers? What PHP program for finding the standard deviation of an array exactly means?. I just hope that will not emerge anymore