Accord.Tests.Statistics.NormalDistributionTest.FitTest C# (CSharp) Method

        public void FitTest()
        {
            double expectedMean = 1.125;
            double expectedSigma = 1.01775897605147;

            NormalDistribution target;

            target = new NormalDistribution();
            double[] observations = { 0.10, 0.40, 2.00, 2.00 };
            double[] weights = { 0.25, 0.25, 0.25, 0.25 };
            target.Fit(observations, weights);

            Assert.AreEqual(expectedMean, target.Mean);
            Assert.AreEqual(expectedSigma, target.StandardDeviation, 1e-6);


            target = new NormalDistribution();
            double[] observations2 = { 0.10, 0.10, 0.40, 2.00 };
            double[] weights2 = { 0.125, 0.125, 0.25, 0.50 };
            target.Fit(observations2, weights2);

            Assert.AreEqual(expectedMean, target.Mean);
        }