EMMA Coverage Report

EMMA Coverage Report (generated Sun Feb 05 10:43:15 CET 2012)
[all classes][de.uka.ipd.sdq.statistics.estimation]

COVERAGE SUMMARY FOR SOURCE FILE [SampleVarianceEstimator.java]

name	class, %	method, %	block, %	line, %
SampleVarianceEstimator.java	0% (0/1)	0% (0/2)	0% (0/43)	0% (0/7)

name	class, %	method, %	block, %	line, %

class SampleVarianceEstimator	0% (0/1)	0% (0/2)	0% (0/43)	0% (0/7)
SampleVarianceEstimator (): void		0% (0/1)	0% (0/3)	0% (0/1)
estimatePoint (List): double		0% (0/1)	0% (0/40)	0% (0/6)

1	package de.uka.ipd.sdq.statistics.estimation;
2
3	import java.util.List;
4
5	/**
6	* Estimator for the sample variance.
7	*
8	* @author Philipp Merkle
9	*
10	*/
11	public class SampleVarianceEstimator implements IPointEstimator {
12
13	@Override
14	public double estimatePoint(List<Double> samples) {
15	double mean = new SampleMeanEstimator().estimatePoint(samples);
16	double sum = 0.0;
17	for (Double s : samples) {
18	sum += Math.pow(s - mean, 2.0);
19	}
20	double sampleVariance = 1.0 / (samples.size() - 1) * sum;
21
22	return sampleVariance;
23	}
24
25	}