One Sample T-Test
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Current revision as of 15:38, 22 January 2007
/*
January 2007. Annie Che <chea@stat.ucla.edu>. UCLA Statistics.
Source of example data:
Mathematical Statistics and Data Analysis, John Rice, Second Edition.
Page 390, example A, determination of the laten heat of fusion of ice.
*/
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.OneTResult;
public class OneTExample {
public static void main(String args[]) {
double[] soloVariable = {93,67,77,92,97,62,136,120,115,104,115,121,102,130, 198,217,209,221,190};
// you'll need to instantiate a data instance first.
Data data = new Data();
//data.appendX("score", score, DataType.FACTOR);
data.appendY("SoloVariable", soloVariable, DataType.QUANTITATIVE);
// then use the following line to get the result.
try {
OneTResult result =
(OneTResult) data.modelOneT(soloVariable);
if (result != null) {
// Getting the model's parameter estiamtes and statistics.
double sampleMean = result.getSampleMean();
double sampleVar = result.getSampleVariance();
int degreesFreedome = result.getDF();
System.out.println("sample mean = " + sampleMean);
System.out.println("sample variance = " + sampleVar);
System.out.println("degrees of freedom = " + degreesFreedome);
}
} catch (Exception e) {
System.out.println(e);
}
}
}
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