Example usage for org.apache.commons.math3.stat.descriptive.summary SumOfSquares SumOfSquares

Introduction

In this page you can find the example usage for org.apache.commons.math3.stat.descriptive.summary SumOfSquares SumOfSquares.

Prototype

public SumOfSquares() 

Source Link

Document

Create a SumOfSquares instance

Usage

From source file:org.apereo.portal.events.aggr.JpaStatisticalSummaryTest.java

@Ignore
@Test//from w  ww .j av  a  2 s . co m
public void testSummaryStatisticsJson() throws Exception {
    final SecondMoment secondMoment = new SecondMoment();
    final Sum sum = new Sum();
    final SumOfSquares sumsq = new SumOfSquares();
    final Min min = new Min();
    final Max max = new Max();
    final SumOfLogs sumLog = new SumOfLogs();

    final Random r = new Random(0);
    for (int i = 0; i < 10; i++) {
        final int nextInt = r.nextInt(100000000);
        secondMoment.increment(nextInt);
        sum.increment(nextInt);
        sumsq.increment(nextInt);
        min.increment(nextInt);
        max.increment(nextInt);
        sumLog.increment(nextInt);
    }

    testStorelessUnivariateStatistic(secondMoment, 7.513432791665536E15);
    testStorelessUnivariateStatistic(sum, 6.01312177E8);
    testStorelessUnivariateStatistic(sumsq, 4.3671066212513456E16);
    testStorelessUnivariateStatistic(min, 2116447.0);
    testStorelessUnivariateStatistic(max, 8.5505948E7);
    testStorelessUnivariateStatistic(sumLog, 175.91713800250577);
}

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From source file:org.apereo.portal.events.aggr.stat.JpaStatisticalSummary.java

private SumOfSquares _getSumsq() {
    if (this.sumsq == null) {
        this.sumsq = new SumOfSquares();
    }/* w w w  .j  a va 2 s .c  om*/
    return this.sumsq;
}

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