Statistics

import chn.util.*;
import apcslib.*;

public class Statistics {

    public static double findAverage(int[] data, int index){
        double average;
        double sum = 0;
        for (int i = 0; i < 1000; i++){
            sum += data[i];
        }
        average = (double)(sum/index);
        return average;
    }
    public static double stdDev(int[] data, int index){
        double deviation, devSum = 0, partC, partD;
        for (int i = 0; i < 1000; i++){
            deviation = Math.pow(findAverage(data, index) - data[i], 2);
            devSum += deviation;
        }
        partC = devSum/data.length;
        partD = Math.sqrt(partC);
        return partD;
    }
    public static int mode(int[] data, int index){
        int maxValue = 0, maxCount = 0;
        for (int i = 0; i < index; i++){
            int count = 0;
            for (int j = 0; j < index; j++){
                if (data[j] == data[i])
                    count++;
                }
                if (count > maxCount){
                maxCount = count;
                maxValue = data[i];
            }
        }
        return maxValue;
    }
    public static void main(String[] args){
        final int MAX = 1000;
        int[] data = new int[MAX];
        int index = 0;
        FileInput inFile = new FileInput("numbers.txt");
        while (inFile.hasMoreLines()){
            int number = inFile.readInt();
            data[index] = number;
            index ++;
        }
        System.out.println("Average: " + Format.left(findAverage(data, index), 10, 2));
        System.out.println("Standard Deviation: " + Format.left(stdDev(data, index), 10, 2));
        System.out.println("Mode: " +Format.left(mode(data, index), 10, 2));
    }
}