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1、TheevaluationofwineAbstract:Usingnonparametricstatisticalmodelandstatisticalregressionmodeltoanalysethequalityofthewine,thenwegetamorecomprehensiveevaluationmethod.Aconcreteanalysisisasfollows:Inviewofthequestionone,weusenonparametricKendall’scoefficientofcon
2、cordanceWtoestablishthenonparametricstatisticalmodel,andgettwogro-upsofsommeliershavesignificantdifferenceintheresultoftheevaluationofredwineandnosignificantdifferenceintheresultoftheevaluationofwhitewine.Combinedwithdeviationanalysis,wegetthesecondgroupsomme
3、lier’stheresultoftheevaluationmorereliable.Inviewofthequestiontwo,weusetheprincipalcomponentanalysistoprocesstheoriginaldata,andthenusetheclusteringanalysismethodology,tomathematicalmodelling.weusetheSPSSsoftwaretodividethewinegrapeinto6level.Inviewofthequest
4、ionthree,weusetheMATLABsoftwaretosolveregr-essioncoefficient,tobuildastatisticalregressionmodel,andgetbetweenwinegrapeandthephysicochemicalindexesofthewine’sstatisticalregressionmodel.Inviewofthequestionfour,weusetheEXCELsoftwarefittingtoanalysisvariablesandt
5、heMATLABsoftwaretosolveregressioncoefficient.Andwebuildbetweenwinegrape,thephysicochemicalindexesofthewineandthequalityofthewine’sstatisticalregressionmodel.Onthisbasis,furtherpromotion,wejoinaromaticsubstanceintheinfluenceonthequalityofthewine,andsetupcorres
6、pondingstatisticalregressionmodel.Keyword:principalcomponentanalysis;clusteringanalysis;statisticalregression;theMATLABsoftware;theSPSSsoftwareTheproblemrestatementWeknoweachsommeliermarkintheclassificationindexaftertastethewine,andthensummingthetotalscore,to
7、determinethequalityofthewine.Thestandorfallofwinegrapeandthequalityofthehasdirectrelation.Wineandwinegrapedetectionofthephysicochemicalindexeswillbereflectthequalityofthewineandgrapeinacertainextent.Accordingtotheattachment1,2,3thegivendata,tosolvethefollowin
8、gquestions:1.Analysistwogroupsofsommelier’stheresultsintheattachment1havesignificantdifferenceornot,whichasetofresultsmorereliable?2.Accordingtothephysicochemicalindexesofwinegrapeandtheq
