hh function distributionh spreadhaar distributionhadamard derivativehadamard matrixhajek renyi inequalityhaldane smith testhalf normal distributionhalf normal plothalf plaidhalf samplehalf sample techniquehardy weinberg modelharmonic analysisharmonic componentsharmonic meanharmonic variabilityharris pollhat matrixhausdorff dimensionhausman specification testhazard plottinghazard regressionheavy tailheavy tailed distributionhedonic index numbershellinger distance estimationhelmert transformationhenderson methodheritabilityhermite distributionhermite formhermite polynomialhermitian matrixheterogeneityheteroscedasticityheuristic methodhierarchical classificationhierarchical cluster analysishierarchical kappa statistichierarchical regression modelhierarchy of modelshighspreadhildreth lu scanning methodhistogramhistorical controlhistorical serieshistorical studyhistory of statistics