replication of an experimentrepresentationrepresentative samplerepresentative samplingreproducibilityreproducing kernel hilbert spacereproduction ratereproductive modelreproductive properties of distributionrerandomizationrerandomization testresamplingresampling proceduresrescaled range analysisrescalingresearch hypothesisresidualresidual changeresidual sum of squaresresidual waiting timeresiduationresistanceresistant techniquesresolutionresolvableresolvable designrespondentresponse analysisresponse biasresponse errorresponse modelresponse surface designresponse variablerestorationrestricted maximum likelihoodrestricted randomizationrestrictionrestriction errorresubmitted lotresubstitution methodretracted distributionretrodictionretrospectiveretrospective studiesreturn periodreturn statereversalreversal designreversal testreverse martingale