Examples of org.apache.commons.math3.stat.descriptive.moment.Variance.increment()

org.apache.commons.math3.stat.descriptive.moment.Variance.increment()

{@inheritDoc}

If all values are available, it is more accurate to use {@link #evaluate(double[])} rather than adding values one at a timeusing this method and then executing {@link #getResult}, since evaluate leverages the fact that is has the full list of values together to execute a two-pass algorithm. See {@link Variance}.

Note also that when {@link #Variance(SecondMoment)} is used tocreate a Variance, this method does nothing. In that case, the SecondMoment should be incremented directly.

                double val = data[i];


                // within category
                num++;
                sum.increment(val);
                sumsq.increment(val);


                // for all categories
                totnum++;
                totsum.increment(val);
                totsumsq.increment(val);

                double val = data[i];


                // within category
                num++;
                sum.increment(val);
                sumsq.increment(val);


                // for all categories
                totnum++;
                totsum.increment(val);
                totsumsq.increment(val);

        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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