Examples of SumOfSquares

org.apache.commons.math.stat.descriptive.summary.SumOfSquares
Returns the sum of the squares of the available values.
If there are no values in the dataset, or any of the values are NaN, then NaN is returned.

Note that this implementation is not synchronized. If multiple threads access an instance of this class concurrently, and at least one of the threads invokes the increment() or clear() method, it must be synchronized externally.
@version $Revision: 1006299 $ $Date: 2010-10-10 16:47:17 +0200 (dim. 10 oct. 2010) $
org.apache.commons.math.stat.univariate.summary.SumOfSquares
@version $Revision: 1.12 $ $Date: 2003/11/19 03:28:24 $
org.apache.commons.math3.stat.descriptive.summary.SumOfSquares
Returns the sum of the squares of the available values.
If there are no values in the dataset, then 0 is returned. If any of the values are NaN, then NaN is returned.

Note that this implementation is not synchronized. If multiple threads access an instance of this class concurrently, and at least one of the threads invokes the increment() or clear() method, it must be synchronized externally.

Examples of org.apache.commons.math3.stat.descriptive.summary.SumOfSquares

    @Ignore
    @Test
    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);
        }

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Examples of org.apache.commons.math3.stat.descriptive.summary.SumOfSquares

        }
        return this.sum;
    }
    private SumOfSquares _getSumsq() {
        if (this.sumsq == null) {
            this.sumsq = new SumOfSquares();
        }
        return this.sumsq;
    }

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Examples of org.apache.commons.math3.stat.descriptive.summary.SumOfSquares

            TestUtils.assertEquals(dstats.getVariance(), sstats.getVariance(), tol);
            TestUtils.assertEquals(new Variance().evaluate(values), dstats.getVariance(), tol);
            TestUtils.assertEquals(dstats.getSum(), sstats.getSum(), tol);
            TestUtils.assertEquals(new Sum().evaluate(values), dstats.getSum(), tol);
            TestUtils.assertEquals(dstats.getSumsq(), sstats.getSumsq(), tol);
            TestUtils.assertEquals(new SumOfSquares().evaluate(values), dstats.getSumsq(), tol);
            TestUtils.assertEquals(dstats.getPopulationVariance(), sstats.getPopulationVariance(), tol);
            TestUtils.assertEquals(new Variance(false).evaluate(values), dstats.getPopulationVariance(), tol);
        }
    }

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