Two Way ANOVA

/*

July 2006. Annie Che <chea@stat.ucla.edu>. UCLA Statistics.

Source of example data: An Introduction to Computational Statitics by Robert I Jennrich,
Page 207, example of regression on time for coins to reach bottom of fountains.

*/
package edu.ucla.stat.SOCR.analyses.example;

import java.util.HashMap;
import edu.ucla.stat.SOCR.analyses.data.Data;
import edu.ucla.stat.SOCR.analyses.data.DataType;
import edu.ucla.stat.SOCR.analyses.result.AnovaTwoWayResult;


public class AnovaTwoWayExample {
	public static void main(String args[]) {
		String[] group1 = {"1","1","1","2","2","2"};
		String[] group2 = {"1","2","3","1","2","3"};
		double[] score = {93,136,198,88,148,279};

		// you'll need to instantiate a data instance first.
		Data data = new Data();

		/*********************************************************************
		then put the data into the Data Object.
		append the predictor data using method "addPredictor".
		append the response data using method "addResponse".
		**********************************************************************/
		data.addPredictor("I", group1, DataType.FACTOR);
		data.addPredictor("J", group2, DataType.FACTOR);
		data.addResponse("Y", score, DataType.QUANTITATIVE);


		try {
			AnovaTwoWayResult result = data.modelAnovaTwoWay();
			System.out.println("result = " + result);
			if (result != null) {



				// Getting the model's parameter estiamtes and statistics.
				int dfCTotal = result.getDFTotal();
				int dfModel = result.getDFModel();
				int dfError = result.getDFError();
				System.out.println("dfCTotal = " + dfCTotal);
				System.out.println("dfModel = " + dfModel);
				System.out.println("dfError = " + dfError);

				double rssTotal = result.getRSSTotal();
				double rssModel = result.getRSSModel();
				double rssError = result.getRSSError();
				System.out.println("rssTotal = " + rssTotal);
				System.out.println("rssModel = " + rssModel);
				System.out.println("rssError = " + rssError);

				double mssModel = result.getMSSModel();
				double mssError = result.getMSSError();

				System.out.println("mssModel = " + mssModel);
				System.out.println("mssError = " + mssError);

				double fValue = result.getFValue();
				String pValue = result.getPValue();
				System.out.println("fValue = " + fValue);
				System.out.println("pValue = " + pValue);

				String[] varList = result.getVariableList();
				int[] dfGroup = result.getDFGroup();
				double[] rssGourp = result.getRSSGroup();
				double[] mseGourp = result.getMSEGroup();
				double[] fValueGroup = result.getFValueGroup();
				String[] pValueGroup = result.getPValueGroup();
				double[] residuals = result.getResiduals();
				double[] predicted = result.getPredicted();

				// residuals after being sorted ascendantly.
				double[] sortedResiduals = result.getSortedResiduals();

				// sortedResiduals after being standardized.
				double[] sortedStandardizedResiduals = 
                                result.getSortedStandardizedResiduals();

				// the original index of sortedResiduals, stored as integer array.
				int[] sortedResidualsIndex = result.getSortedResidualsIndex();

				// the normal quantiles of sortedResiduals.
				double[] sortedNormalQuantiles = result.getSortedNormalQuantiles();

				// sortedNormalQuantiles after being standardized.
				double[] sortedStandardizedNormalQuantiles = 
                                result.getSortedStandardizedNormalQuantiles();

				System.out.println("dfCTotal = " + dfCTotal);
				System.out.println("dfModel = " + dfModel);
				System.out.println("dfError = " + dfError);

				System.out.println("rssTotal = " + rssTotal);
				System.out.println("rssModel = " + rssModel);
				System.out.println("rssError = " + rssError);

				System.out.println("mssModel = " + mssModel);
				System.out.println("mssError = " + mssError);

				System.out.println("fValue = " + fValue);
				System.out.println("pValue = " + pValue);

				for (int i = 0; i < varList.length; i++) {
					System.out.println("varList["+i+"] = " + varList[i]);
				}
				for (int i = 0; i < residuals.length; i++) {
					System.out.println("residuals["+i+"] = " + residuals[i]);
				}

			}
		} catch (Exception e) {
			System.out.println(e);
		}
	}
}

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