Now calculates standard deviation.
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1fae1332bd
commit
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@ -1,3 +1,4 @@
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import java.lang.Math;
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import java.util.HashMap;
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import java.util.Map;
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@ -11,16 +12,22 @@ import java.util.Map;
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public class MMMCalc {
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private static boolean verbose = false;
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private static float[] numArray;
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private static float mean = 0;
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private static float median = 0;
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private static float mode = 0;
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private static float range = 0;
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private static float stdDev = 0;
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public static void main(String[] args) {
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System.out.println("Welcome to MMMCalc v0.1, a simple tool for basic statistics calculations.\n" +
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System.out.println("Welcome to MMMCalc v0.2, a simple tool for basic statistics calculations.\n" +
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"This software is licensed under the GNU GPLv3 license and comes WITHOUT WARRANTY.\n");
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if(args.length > 0) {
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if(args[0].equals("-h")) {
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System.out.println("Usage:\n" +
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" MMMCalc [options] [variables]\n\n" +
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"Options:\n" +
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" -h -- Show this help information.\n");
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" -h -- Show this help information.\n" +
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" -v | -V -- Be verbose (show the work)\n");
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} else if(args[0].equals("-v") || args[0].equals("-V")) {
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verbose = true;
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numArray = new float[args.length - 1];
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@ -34,6 +41,7 @@ public class MMMCalc {
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calcMedian();
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calcMode();
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calcRange();
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calcStdDev();
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} else {
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numArray = new float[args.length];
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@ -46,6 +54,7 @@ public class MMMCalc {
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calcMedian();
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calcMode();
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calcRange();
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calcStdDev();
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}
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} else {
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System.out.println("You did not mention any variables. Use the -h argument for help.");
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@ -67,7 +76,6 @@ public class MMMCalc {
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}
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private static void calcMean() {
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float mean = 0;
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float sum = 0;
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for(float i: numArray) {
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@ -80,11 +88,11 @@ public class MMMCalc {
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}
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private static void calcMedian() {
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int midVar = 0;
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int midVar = numArray.length / 2;
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midVar = numArray.length / 2;
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median = numArray[midVar];
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System.out.println("Median: " + numArray[midVar]);
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System.out.println("Median: " + median);
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}
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private static void calcMode() {
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@ -99,7 +107,6 @@ public class MMMCalc {
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}
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}
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float mode = 0;
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float modeFreq = 0;
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for(Map.Entry<Float, Float> entry: fx.entrySet()) {
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@ -115,7 +122,6 @@ public class MMMCalc {
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private static void calcRange() {
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int l = numArray.length -1;
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float range = 0;
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range = numArray[l] - numArray[0];
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System.out.println("Range: " + range);
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@ -124,4 +130,15 @@ public class MMMCalc {
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System.out.println(numArray[l] + " - " + numArray[0] + " = " + range + "\n");
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}
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}
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private static void calcStdDev() {
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float difSum = 0;
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for(int i = 0; i < numArray.length; i++) {
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difSum += numArray[i] - mean;
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}
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stdDev = difSum / (float)Math.sqrt((double)numArray.length);
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System.out.println("Standard Deviation: " + stdDev);
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}
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}
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@ -1,2 +1,2 @@
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Manifest-Version: 0.1
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Manifest-Version: 0.2
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Main-Class: MMMCalc
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