public void PopulationCovarianceConsistentWithPopulationVariance(string dataSet) { var data = _data[dataSet]; AssertHelpers.AlmostEqual(Statistics.PopulationVariance(data.Data), Statistics.PopulationCovariance(data.Data, data.Data), 10); AssertHelpers.AlmostEqual(ArrayStatistics.PopulationVariance(data.Data), ArrayStatistics.PopulationCovariance(data.Data, data.Data), 10); AssertHelpers.AlmostEqual(StreamingStatistics.PopulationVariance(data.Data), StreamingStatistics.PopulationCovariance(data.Data, data.Data), 10); }
public void ThrowsOnNullData() { double[] data = null; // ReSharper disable InvokeAsExtensionMethod Assert.That(() => Statistics.Minimum(data), Throws.Exception); Assert.That(() => Statistics.Maximum(data), Throws.Exception); Assert.That(() => Statistics.Mean(data), Throws.Exception); Assert.That(() => Statistics.Median(data), Throws.Exception); Assert.That(() => Statistics.Quantile(data, 0.3), Throws.Exception); Assert.That(() => Statistics.Variance(data), Throws.Exception); Assert.That(() => Statistics.StandardDeviation(data), Throws.Exception); Assert.That(() => Statistics.PopulationVariance(data), Throws.Exception); Assert.That(() => Statistics.PopulationStandardDeviation(data), Throws.Exception); Assert.That(() => Statistics.Covariance(data, data), Throws.Exception); Assert.That(() => Statistics.PopulationCovariance(data, data), Throws.Exception); // ReSharper restore InvokeAsExtensionMethod Assert.That(() => SortedArrayStatistics.Minimum(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => SortedArrayStatistics.Minimum(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => SortedArrayStatistics.Maximum(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => SortedArrayStatistics.OrderStatistic(data, 1), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => SortedArrayStatistics.Median(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => SortedArrayStatistics.LowerQuartile(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => SortedArrayStatistics.UpperQuartile(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => SortedArrayStatistics.Percentile(data, 30), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => SortedArrayStatistics.Quantile(data, 0.3), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => SortedArrayStatistics.QuantileCustom(data, 0.3, 0, 0, 1, 0), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => SortedArrayStatistics.QuantileCustom(data, 0.3, QuantileDefinition.Nearest), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => SortedArrayStatistics.InterquartileRange(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => SortedArrayStatistics.FiveNumberSummary(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => ArrayStatistics.Minimum(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => ArrayStatistics.Maximum(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => ArrayStatistics.OrderStatisticInplace(data, 1), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => ArrayStatistics.Mean(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => ArrayStatistics.Variance(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => ArrayStatistics.StandardDeviation(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => ArrayStatistics.PopulationVariance(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => ArrayStatistics.PopulationStandardDeviation(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => ArrayStatistics.Covariance(data, data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => ArrayStatistics.PopulationCovariance(data, data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => ArrayStatistics.MedianInplace(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => ArrayStatistics.QuantileInplace(data, 0.3), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => StreamingStatistics.Minimum(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => StreamingStatistics.Maximum(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => StreamingStatistics.Mean(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => StreamingStatistics.Variance(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => StreamingStatistics.StandardDeviation(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => StreamingStatistics.PopulationVariance(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => StreamingStatistics.PopulationStandardDeviation(data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => StreamingStatistics.Covariance(data, data), Throws.Exception.TypeOf <NullReferenceException>()); Assert.That(() => StreamingStatistics.PopulationCovariance(data, data), Throws.Exception.TypeOf <NullReferenceException>()); }
public void ArrayStatisticsConsistentWithStreamimgStatistics(string dataSet) { var data = _data[dataSet]; AssertHelpers.AlmostEqual(ArrayStatistics.Mean(data.Data), StreamingStatistics.Mean(data.Data), 10); AssertHelpers.AlmostEqual(ArrayStatistics.Variance(data.Data), StreamingStatistics.Variance(data.Data), 10); AssertHelpers.AlmostEqual(ArrayStatistics.StandardDeviation(data.Data), StreamingStatistics.StandardDeviation(data.Data), 10); AssertHelpers.AlmostEqual(ArrayStatistics.PopulationVariance(data.Data), StreamingStatistics.PopulationVariance(data.Data), 10); AssertHelpers.AlmostEqual(ArrayStatistics.PopulationStandardDeviation(data.Data), StreamingStatistics.PopulationStandardDeviation(data.Data), 10); AssertHelpers.AlmostEqual(ArrayStatistics.Covariance(data.Data, data.Data), StreamingStatistics.Covariance(data.Data, data.Data), 10); AssertHelpers.AlmostEqual(ArrayStatistics.PopulationCovariance(data.Data, data.Data), StreamingStatistics.PopulationCovariance(data.Data, data.Data), 10); }
public void ThrowsOnNullData() { double[] data = null; Assert.Throws <ArgumentNullException>(() => Statistics.Minimum(data)); Assert.Throws <ArgumentNullException>(() => Statistics.Maximum(data)); Assert.Throws <ArgumentNullException>(() => Statistics.Mean(data)); Assert.Throws <ArgumentNullException>(() => Statistics.Median(data)); Assert.Throws <ArgumentNullException>(() => Statistics.Quantile(data, 0.3)); Assert.Throws <ArgumentNullException>(() => Statistics.Variance(data)); Assert.Throws <ArgumentNullException>(() => Statistics.StandardDeviation(data)); Assert.Throws <ArgumentNullException>(() => Statistics.PopulationVariance(data)); Assert.Throws <ArgumentNullException>(() => Statistics.PopulationStandardDeviation(data)); Assert.Throws <ArgumentNullException>(() => Statistics.Covariance(data, data)); Assert.Throws <ArgumentNullException>(() => Statistics.PopulationCovariance(data, data)); Assert.Throws <ArgumentNullException>(() => SortedArrayStatistics.Minimum(data)); Assert.Throws <ArgumentNullException>(() => SortedArrayStatistics.Maximum(data)); Assert.Throws <ArgumentNullException>(() => SortedArrayStatistics.OrderStatistic(data, 1)); Assert.Throws <ArgumentNullException>(() => SortedArrayStatistics.Median(data)); Assert.Throws <ArgumentNullException>(() => SortedArrayStatistics.LowerQuartile(data)); Assert.Throws <ArgumentNullException>(() => SortedArrayStatistics.UpperQuartile(data)); Assert.Throws <ArgumentNullException>(() => SortedArrayStatistics.Percentile(data, 30)); Assert.Throws <ArgumentNullException>(() => SortedArrayStatistics.Quantile(data, 0.3)); Assert.Throws <ArgumentNullException>(() => SortedArrayStatistics.QuantileCustom(data, 0.3, 0, 0, 1, 0)); Assert.Throws <ArgumentNullException>(() => SortedArrayStatistics.QuantileCustom(data, 0.3, QuantileDefinition.Nearest)); Assert.Throws <ArgumentNullException>(() => SortedArrayStatistics.InterquartileRange(data)); Assert.Throws <ArgumentNullException>(() => SortedArrayStatistics.FiveNumberSummary(data)); Assert.Throws <ArgumentNullException>(() => ArrayStatistics.Minimum(data)); Assert.Throws <ArgumentNullException>(() => ArrayStatistics.Maximum(data)); Assert.Throws <ArgumentNullException>(() => ArrayStatistics.OrderStatisticInplace(data, 1)); Assert.Throws <ArgumentNullException>(() => ArrayStatistics.Mean(data)); Assert.Throws <ArgumentNullException>(() => ArrayStatistics.Variance(data)); Assert.Throws <ArgumentNullException>(() => ArrayStatistics.StandardDeviation(data)); Assert.Throws <ArgumentNullException>(() => ArrayStatistics.PopulationVariance(data)); Assert.Throws <ArgumentNullException>(() => ArrayStatistics.PopulationStandardDeviation(data)); Assert.Throws <ArgumentNullException>(() => ArrayStatistics.Covariance(data, data)); Assert.Throws <ArgumentNullException>(() => ArrayStatistics.PopulationCovariance(data, data)); Assert.Throws <ArgumentNullException>(() => ArrayStatistics.MedianInplace(data)); Assert.Throws <ArgumentNullException>(() => ArrayStatistics.QuantileInplace(data, 0.3)); Assert.Throws <ArgumentNullException>(() => StreamingStatistics.Minimum(data)); Assert.Throws <ArgumentNullException>(() => StreamingStatistics.Maximum(data)); Assert.Throws <ArgumentNullException>(() => StreamingStatistics.Mean(data)); Assert.Throws <ArgumentNullException>(() => StreamingStatistics.Variance(data)); Assert.Throws <ArgumentNullException>(() => StreamingStatistics.StandardDeviation(data)); Assert.Throws <ArgumentNullException>(() => StreamingStatistics.PopulationVariance(data)); Assert.Throws <ArgumentNullException>(() => StreamingStatistics.PopulationStandardDeviation(data)); Assert.Throws <ArgumentNullException>(() => StreamingStatistics.Covariance(data, data)); Assert.Throws <ArgumentNullException>(() => StreamingStatistics.PopulationCovariance(data, data)); }
public void CovarianceIsSymmetric() { var dataA = _data["lottery"].Data.Take(200); var dataB = _data["lew"].Data.Take(200); AssertHelpers.AlmostEqual(Statistics.Covariance(dataA, dataB), Statistics.Covariance(dataB, dataA), 12); AssertHelpers.AlmostEqual(StreamingStatistics.Covariance(dataA, dataB), StreamingStatistics.Covariance(dataB, dataA), 12); AssertHelpers.AlmostEqual(ArrayStatistics.Covariance(dataA.ToArray(), dataB.ToArray()), ArrayStatistics.Covariance(dataB.ToArray(), dataA.ToArray()), 12); AssertHelpers.AlmostEqual(Statistics.PopulationCovariance(dataA, dataB), Statistics.PopulationCovariance(dataB, dataA), 12); AssertHelpers.AlmostEqual(StreamingStatistics.PopulationCovariance(dataA, dataB), StreamingStatistics.PopulationCovariance(dataB, dataA), 12); AssertHelpers.AlmostEqual(ArrayStatistics.PopulationCovariance(dataA.ToArray(), dataB.ToArray()), ArrayStatistics.PopulationCovariance(dataB.ToArray(), dataA.ToArray()), 12); }