This program calculates the standard deviation of an individual series using arrays. Visit this page to learn about Standard Deviation.
To calculate the standard deviation, we have created a function named calculateSD().
Example: Population Standard Deviation
// SD of a population #include <math.h> #include <stdio.h> float calculateSD(float data[]); int main() { int i; float data[10]; printf("Enter 10 elements: "); for (i = 0; i < 10; ++i) scanf("%f", &data[i]); printf("\nStandard Deviation = %.6f", calculateSD(data)); return 0; } float calculateSD(float data[]) { float sum = 0.0, mean, SD = 0.0; int i; for (i = 0; i < 10; ++i) { sum += data[i]; } mean = sum / 10; for (i = 0; i < 10; ++i) { SD += pow(data[i] - mean, 2); } return sqrt(SD / 10); } Output
Enter 10 elements: 1 2 3 4 5 6 7 8 9 10 Standard Deviation = 2.872281
Here, the array containing 10 elements is passed to the calculateSD() function. The function calculates the standard deviation using mean and returns it.
Note: The program calculates the standard deviation of a population. If you need to find the standard deviation of a sample, the formula is slightly different.