package com.imsl.test.example.stat;

import java.text.*;
import com.imsl.stat.*;
/**
 * <p>Performs the sign test on a small data set.</p>
 * 
 * <p>This example tests the null hypothesis that at least \(75\) percent of a
population is negative. Because \(0.923 \lt 0.95\), the null hypothesis at the
\(5\)-percent level of significance is rejected.</p>

 * 
 * @see <a href="SignTestEx2.java">Code</a>
 * @see <a href="doc-files/SignTestEx2.out">Output</a>
 */

public class SignTestEx2 {

    public static void main(String args[]) {
        double[] x = {
            92.0, 139.0, -6.0, 10.0, 81.0, -11.0, 45.0, -25.0, -4.0,
            22.0, 2.0, 41.0, 13.0, 8.0, 33.0, 45.0, -33.0, -45.0, -12.0
        };
        SignTest st = new SignTest(x);
        NumberFormat nf = NumberFormat.getInstance();
        nf.setMaximumFractionDigits(6);

        st.setPercentage(0.75);
        st.setPercentile(0.0);
        System.out.println("Probability = " + nf.format(st.compute()));
        System.out.println("Number of positive deviations = "
                + st.getNumPositiveDev());
        System.out.println("Number of ties = " + st.getNumZeroDev());
    }
}