C program to Calculate Standard Deviation

C program to calculate standard deviation.

In this article, you will learn how to calculate the standard deviation of the input numbers.

Example

Source

// C program to calculate Standard Deviation
#include <stdio.h>
#include <math.h>

// It's main function of the program
int main() {
    int sd_count, i;
    float sum = 0.0, mean, sd_val = 0.0;
    
    printf("Tell me count of numbers to calculate the standard deviation: ");
    scanf("%d", &sd_count);

    float sd_elements[sd_count];
    printf("\nEnter the %d elements:\n", sd_count);
    for (i = 0; i < sd_count; i++) {
        scanf("%f", &sd_elements[i]);
        sum += sd_elements[i];
    }
    mean = sum / 10;

    for (i = 0; i < 10; i++) {
        sd_val += pow(sd_elements[i] - mean, 2);
    }

    // Final output of the program
    printf("\nStandard Deviation = %.6f\n", sqrt(sd_val / 10));
    return 0;
}

Run

Output