Java Program To Calculate Standard Deviation

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public class JavaStandardDeviation {

	public static void main(String[] args) {
		double[] numArray = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
		double SD = calculateSD(numArray);

		System.out.format("Standard Deviation = %.6f", SD);
	}

	public static double calculateSD(double numArray[]) {
		double sum = 0.0, standardDeviation = 0.0;

		for (double num : numArray) {
			sum += num;
		}

		double mean = sum / 10;

		for (double num : numArray) {
			standardDeviation += Math.pow(num - mean, 2);
		}

		return Math.sqrt(standardDeviation / 10);
	}
}
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