### How to Calculate Standard Deviation through a Java program ?.

 Tweet Program to Calculate Standard Deviation in Java ```package com.hubberspot.example; public class StandardDeviation { public static void main(String[] args) { double[] numbers = new double[10]; // Take the 10 numbers in array for which we // want to calculate the standard deviation numbers[0] = 23; numbers[1] = 92; numbers[2] = 46; numbers[3] = 55; numbers[4] = 63; numbers[5] = 94; numbers[6] = 77; numbers[7] = 38; numbers[8] = 84; numbers[9] = 26; System.out.println("1. Get the mean of numbers. The mean is : "); double sum = 0; // Taking the average to numbers for(int i =0; i< numbers.length; i++) { sum = sum + numbers[i]; } double mean = sum/numbers.length; System.out.println(mean); System.out.println("\n2. Get deviation of mean from each number : "); double[] deviations = new double[10]; // Taking the deviation of mean from each numbers for(int i = 0; i < deviations.length; i++) { deviations[i] = numbers[i] - mean ; System.out.printf("%2.2f",deviations[i]); System.out.print(" "); } System.out.println(); System.out.println("\n3. Get squares of deviations : "); double[] squares = new double[10]; // getting the squares of deviations for(int i =0; i< squares.length; i++) { squares[i] = deviations[i] * deviations[i]; System.out.printf("%4.2f",squares[i]); System.out.print(" "); } System.out.println(); System.out.println("\n4. Get addition of squares : "); sum = 0; // adding all the squares for(int i =0; i< squares.length; i++) { sum = sum + squares[i]; } System.out.println(sum); // dividing the numbers by one less than total numbers System.out.println("\n5. Divide addition of squares by total (numbers) - 1 : "); double result = sum / (numbers.length - 1); System.out.printf("%4.2f",result); double standardDeviation = Math.sqrt(result); // Taking square root of result gives the // standard deviation System.out.println("\n\n6. Take the square root of result which gives"); System.out.println("the Standard Deviation of the ten numbers : "); System.out.printf("%4.2f",standardDeviation); } } ```Output of the program :    A video tutorial to demonstrate how to calculate Standard Deviation through a Java program. Click below to Download Source Code - DOWNLOAD LINK - 1 DOWNLOAD LINK - 2

Program to Calculate Standard Deviation in Java

```package com.hubberspot.example;

public class StandardDeviation {

public static void main(String[] args) {

double[] numbers = new double[10];

// Take the 10 numbers in array for which we
// want to calculate the standard deviation
numbers[0] = 23;
numbers[1] = 92;
numbers[2] = 46;
numbers[3] = 55;
numbers[4] = 63;
numbers[5] = 94;
numbers[6] = 77;
numbers[7] = 38;
numbers[8] = 84;
numbers[9] = 26;

System.out.println("1. Get the mean of numbers. The mean is : ");

double sum = 0;

// Taking the average to numbers
for(int i =0; i< numbers.length; i++) {
sum = sum + numbers[i];
}

double mean = sum/numbers.length;

System.out.println(mean);

System.out.println("\n2. Get deviation of mean from each number : ");

double[] deviations = new double[10];

// Taking the deviation of mean from each numbers
for(int i = 0; i < deviations.length; i++) {
deviations[i] = numbers[i] - mean ;
System.out.printf("%2.2f",deviations[i]);
System.out.print(" ");
}

System.out.println();
System.out.println("\n3. Get squares of deviations : ");
double[] squares = new double[10];

// getting the squares of deviations
for(int i =0; i< squares.length; i++) {
squares[i] = deviations[i] * deviations[i];
System.out.printf("%4.2f",squares[i]);
System.out.print(" ");
}

System.out.println();
System.out.println("\n4. Get addition of squares : ");

sum = 0;

// adding all the squares
for(int i =0; i< squares.length; i++) {
sum = sum + squares[i];
}

System.out.println(sum);

// dividing the numbers by one less than total numbers
System.out.println("\n5. Divide addition of squares by total (numbers) - 1 : ");
double result = sum / (numbers.length - 1);

System.out.printf("%4.2f",result);

double standardDeviation = Math.sqrt(result);

// Taking square root of result gives the
// standard deviation
System.out.println("\n\n6. Take the square root of result which gives");
System.out.println("the Standard Deviation of the ten numbers : ");
System.out.printf("%4.2f",standardDeviation);

}

}

```
Output of the program :

A video tutorial to demonstrate how to calculate Standard Deviation through a Java program.

Click below to Download Source Code -

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