Implement a Java class Stats to calculate the mean, median, empirical mode, population variance, and sample variance as specified below.

package assignment2;

public class Stats {

// mean

public static double mean(double[] x) {

}

// median

public static double median(double[] x) {

}

// empirical mode

public static double mode(double[] x) {

}

// population variance

public static double var(double[] x) {

}

// sample variance

public static double s2(double[] x) {

}

public static void main(String[] args) {

double[] x = {3, -2, 5, 0, 9, 3, 2, 1};

System.out.println("mean = " + mean(x));

System.out.println("median = " + median(x));

System.out.println("empirical mode = " + mode(x));

System.out.println("var = " + var(x));

System.out.println("sample var = " + s2(x));

} }

A sample test program is provided in the main method, which will produce the output:

mean = 2.625

median = 2.5

empirical mode = 2.25

var = 9.734375

sample var = 11.125