Accord.Tests.Statistics.WeibullDistributionTest.ConstructorTest2 C# (CSharp) Method

        public void ConstructorTest2()
        {
            var weilbull = new WeibullDistribution(scale: 0.42, shape: 1.2);

            double mean = weilbull.Mean;     // 0.39507546046784414
            double median = weilbull.Median; // 0.30945951550913292
            double var = weilbull.Variance;  // 0.10932249666369542
            double mode = weilbull.Mode;     // 0.094360430821809421

            double cdf = weilbull.DistributionFunction(x: 1.4); // 0.98560487188700052
            double pdf = weilbull.ProbabilityDensityFunction(x: 1.4); // 0.052326687031379278
            double lpdf = weilbull.LogProbabilityDensityFunction(x: 1.4); // -2.9502487697674415

            double ccdf = weilbull.ComplementaryDistributionFunction(x: 1.4); // 0.22369885565908001
            double icdf = weilbull.InverseDistributionFunction(p: cdf); // 1.400000001051205

            double hf = weilbull.HazardFunction(x: 1.4); // 1.1093328057258516
            double chf = weilbull.CumulativeHazardFunction(x: 1.4); // 1.4974545260150962

            string str = weilbull.ToString(CultureInfo.InvariantCulture); // Weibull(x; λ = 0.42, k = 1.2)

            double imedian = weilbull.InverseDistributionFunction(p: 0.5);

            Assert.AreEqual(0.39507546046784414, mean);
            Assert.AreEqual(0.30945951550913292, median);
            Assert.AreEqual(0.094360430821809421, mode, 1e-10);
            Assert.AreEqual(0.3094595, imedian, 1e-5);
            Assert.AreEqual(0.10932249666369542, var);
            Assert.AreEqual(1.4974545260150962, chf);
            Assert.AreEqual(0.98560487188700052, cdf);
            Assert.AreEqual(0.052326687031379278, pdf);
            Assert.AreEqual(-2.9502487697674415, lpdf);
            Assert.AreEqual(1.1093328057258516, hf);
            Assert.AreEqual(0.22369885565908001, ccdf);
            Assert.AreEqual(1.40, icdf, 1e-6);
            Assert.AreEqual("Weibull(x; λ = 0.42, k = 1.2)", str);

            var range1 = weilbull.GetRange(0.95);
            var range2 = weilbull.GetRange(0.99);
            var range3 = weilbull.GetRange(0.01);

            Assert.AreEqual(0.035342687605397792, range1.Min);
            Assert.AreEqual(1.0479366931850318, range1.Max);
            Assert.AreEqual(0.0090865355213001313, range2.Min);
            Assert.AreEqual(1.4995260942223139, range2.Max);
            Assert.AreEqual(0.0090865355213001677, range3.Min);
            Assert.AreEqual(1.4995260942223139, range3.Max);
        }