This program calculates the standard deviation of 10 data using arrays.

To understand this example, you should have the knowledge of following C++ programming topics:

This program calculates the standard deviation of a individual series using arrays. Visit this page to learn about Standard Deviation.

To calculate the standard deviation, `calculateSD()`

function is created. The array containing 10 elements is passed to the function and this function calculates the standard deviation and returns it to the `main()`

function.

```
#include <iostream>
#include <cmath>
using namespace std;
float calculateSD(float data[]);
int main()
{
int i;
float data[10];
cout << "Enter 10 elements: ";
for(i = 0; i < 10; ++i)
cin >> data[i];
cout << endl << "Standard Deviation = " << calculateSD(data);
return 0;
}
float calculateSD(float data[])
{
float sum = 0.0, mean, standardDeviation = 0.0;
int i;
for(i = 0; i < 10; ++i)
{
sum += data[i];
}
mean = sum/10;
for(i = 0; i < 10; ++i)
standardDeviation += pow(data[i] - mean, 2);
return sqrt(standardDeviation / 10);
}
```

**Output**

Enter 10 elements: 1 2 3 4 5 6 7 8 9 10 Standard Deviation = 2.872281

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