Accord.Tests.Statistics.ToolsTest.VarianceTest8 C# (CSharp) Method

        public void VarianceTest8()
        {
            double[,] matrix = 
            {
                { 4.0, 2.0, 0.60 },
                { 4.2, 2.1, 0.59 },
                { 3.9, 2.0, 0.58 },
                { 4.3, 2.1, 0.62 },
                { 4.1, 2.2, 0.63 }
            };

            double[] weights = { 0.9, 0.9, 0.9, 0.9, 0.9 };

            double[] expected = 
            { 
                Measures.WeightedVariance(matrix.GetColumn(0), weights, WeightType.Automatic),
                Measures.WeightedVariance(matrix.GetColumn(1), weights, WeightType.Automatic),
                Measures.WeightedVariance(matrix.GetColumn(2), weights, WeightType.Automatic),
            };


            double[] actual = Measures.WeightedVariance(matrix, weights, WeightType.Automatic);

            Assert.IsTrue(Matrix.IsEqual(expected, actual, 1e-10));
        }