Accord.Tests.Statistics.DescriptiveAnalysisTest.DescriptiveAnalysisConstructorTest C# (CSharp) Method

        public void DescriptiveAnalysisConstructorTest()
        {
            double[,] data = Matrix.Magic(3);
            string[] columnNames = { "x", "y", "z" };
            DescriptiveAnalysis target = new DescriptiveAnalysis(data, columnNames);
            target.Compute();

            Assert.AreEqual("x", target.ColumnNames[0]);
            Assert.AreEqual("y", target.ColumnNames[1]);
            Assert.AreEqual("z", target.ColumnNames[2]);


            Assert.IsTrue(target.CorrelationMatrix.IsEqual(new double[,]
            {
                {  1.0000,   -0.7559,    0.1429 },
                { -0.7559,    1.0000,   -0.7559 },
                {  0.1429,   -0.7559,    1.0000 },
            }, atol: 0.0001));

            Assert.IsTrue(target.CovarianceMatrix.IsEqual(new double[,]
            {
                {  7,    -8,     1 },
                { -8,    16,    -8 },
                {  1,    -8,     7 },
            }, atol: 0.00000001));

            Assert.IsTrue(target.StandardScores.IsEqual(new double[,]
            { 
                { 1.1339,   -1.0000,    0.3780 },
                { -0.7559,         0,    0.7559 },
                { -0.3780,    1.0000,   -1.1339 },
            }, atol: 0.001));

            Assert.IsTrue(target.Means.IsEqual(new double[] { 5, 5, 5 }));

            Assert.IsTrue(target.StandardDeviations.IsEqual(new double[] { 2.6458, 4.0000, 2.6458 }, 0.001));

            Assert.IsTrue(target.Medians.IsEqual(new double[] { 4, 5, 6 }));


            Assert.AreEqual(3, target.Ranges[0].Min);
            Assert.AreEqual(8, target.Ranges[0].Max);
            Assert.AreEqual(1, target.Ranges[1].Min);
            Assert.AreEqual(9, target.Ranges[1].Max);
            Assert.AreEqual(2, target.Ranges[2].Min);
            Assert.AreEqual(7, target.Ranges[2].Max);

            Assert.AreEqual(3, target.Samples);
            Assert.AreEqual(3, target.Variables);

            Assert.IsTrue(target.Source.IsEqual(Matrix.Magic(3)));

            Assert.IsTrue(target.Sums.IsEqual(new double[] { 15, 15, 15 }));

            Assert.IsTrue(target.Variances.IsEqual(new double[] { 7, 16, 7 }));

            Assert.AreEqual(3, target.Quartiles[0].Min);
            Assert.AreEqual(8, target.Quartiles[0].Max);
            Assert.AreEqual(1, target.Quartiles[1].Min);
            Assert.AreEqual(9, target.Quartiles[1].Max);
            Assert.AreEqual(2, target.Quartiles[2].Min);
            Assert.AreEqual(7, target.Quartiles[2].Max);
        }