方差分析与假设检验实验报告二

1、云南大学滇池学院方差分析与假设检验实验报告二学生姓名：方炜学号：20212123080专业：软件工程一、实验目的和要求：1、初步理解SPSS勺根本命令；2、掌握方差分析和假设检验。二、实验内容：1、为比较5中品牌的合成木板的耐久性，对每个品牌取4个样本作摩擦试验测量磨损量,得以下数据：品牌样本1122I212113124412.&522.21627224B22.632.2r77-320P3191232113F42.414427n7r&2.61G4271752.318S2.SI1952.32052.4J(1) 它们的耐久性有无明显差异？(2) 有选择的作两品牌的比较，能得出什么结

2、果?2、将土质根本一样的一块耕地分成5块，每块又分成均等的4小块。在每块地内把4个品种的小麦分钟在4小块内，每小块的播种量一样，测得收获量如下：鹿目日犯收获量I11132.3212332131330.S_414295152134.0162233.6r/2334.402426293134.71103236.8113332.31121342S.1134136.011442M315433581164428.517513551185236.1195332.0205429.4考察地块和品种对小麦的收获量有无显著影响？并在必要时作进一步比较。3、为了研究合成纤维收缩率和拉伸倍数对纤维弹性的影响进展了一些试

3、验。收缩率取0,4,8,12四个程度；拉伸倍数取460,520,580,640四个程度，对二者的每个组合重复作两次试验，所得数据如下：收缩率拉伸倍数I弹性1弹性2r1Q4607173205207273r30刑在7340&4O7775rr44607375645207674I1458078P1184&407474FT846076P7310g520797711656074P7512S&407473131246075P731412520737215125网7QP7116126406969(1) 收缩率，拉伸倍数及其交互作用对弹性有无显著影响?(2) 使弹性到达最大的消费条件是什

4、么？三、实验结果与分析:1、运行结果截图：ANQVA样本SumofSquaresdfMeanSquareFSig.BetweenGroupsY/ithinGroupsTotal.623325.94841519156,0227.169.002样本StuderiVNewrnanKeuls3品.博NSub-setforalpha=05123S1254Sig.44444205010002.3Q02.3752.375.755237523752600111Meansforgroupsinhomogeneoussubsetsar白displayeda.UsesHarmonicMeanSampleSize-4

5、.000.1、结果分析：1、，耐久性有明显差异2、由样本分析，品牌3分为一类；品牌1,2,5分为一类；品牌4分为一类。而品牌3和品牌4差距最大，品牌3的耐久性最差，品牌4的耐久性最好。2、运行结果截图:TestsofBetv/een-SubjectsEffects即erdentVariate:收获量SourceTypeIIISumofSquaresdfMeanSqusreFSig.CorrectedModel148.7440721.2499.702.000Intercept21405.4251214054259773.423000A®14.09843.5251.609.235迪134

6、,646344.88220.492.000Error26.282122.190Total21580.45020CorrectedTotal175.02619a.RSquared=.850(AdjustedRSquared=762)PostHocTestsA组HomogeneousSubsets收获量Student-Newman-Keulsa,b解且NSubset112354Sig.4444431.45032.05032.97533.45033.650.280MeansforgroupsinhomogeneoussubsetsaredisplayedBasedonTypeIIISumofSqua

7、resTheerrortermisMeanSquare(Error)=2.190.aUsesHarmonicMeanSampleSire=4.000.b.Alpha=,05.HomogeneousSubsets收获量qbStudent-Newman-Keuls-B组NSubset124312Sig.555528,3401.00033.22034.50034.800.249Meansforgroupsinhomogeneoussubsetsaredisplayed.BasedonTypeIIISumofSquaresTheerrortermisMeanSquare(Error)=2.190.aU

8、sesHarmonicMeanSampleSize=5.000.t>.Alpha-.05.ProfilePlotsEstimatedMarginalMeansot收我Lo5os33,32.32,31.suesreusJeN山EstimotodMarginalMoonsof收滨沙B?12、结果分析：1、地块A组对小麦的收获量无显著影响，品种B组对小麦的收获量有显著影响。2、由图得，地块4最适宜种小麦，地块1最不适宜种小麦；而品种2的小麦收获量最大,品种4的小麦收获量最小。3、运行结果截图:MultrvadateTests0EffectValueFHypothesis*ErrortffSig

9、.In怕rc呵Pillai,sTrace1.0001489544v2.0008.000OOOWilks'Lambda00014S95.446B20DC8.000jOOOHotelling'sTrace372366114ag5.446s2000S.000.000RoysLargestRoot3723.85114895446a2,00。8.000,OOO收寤制PillarsTrace6591.474600018.000.243Wilks'Lambda,3S41.536*600016一000.201Hotelling'sTrace1.49117406.00014000

10、,134Ro/sLargestRoot1.4124.236b3ODD9.000I.04011伸倍数Pillai'sTrace,206.3456,00。1S.000.904Wilks'Lambda,801.313a6.00016.000.921Hotelling'sTrace,239279600014000.937Ro/sLargestRoot193.579b30009.000B43aExactsUtislicb.ThestatisticisanupperboundonFthatyieldsalowerboundonthesignificancelevel.cDesign

11、-Intercept*HitTestsofBetween-SubjectsEffectsSourceDependentVanableTypeIIISumofSquaresdfMeanSquareFSig.CorrectedModel弹在1弹性244.000s37.375b667.3336.229.9202.282.523.128Intercept弹性1弹性287912.25086583.0631187912.25086583.06311027.32131725.092.030.000收容弹性1弹性238.75033.1883312.91711.0631.6204.053.252.045拉伸倍数

12、弹性1弹性25.2504.188331.7501.396.220.511.830.634Error弹性1弹性271.75024.563997.9722.729Total弹性1弹性288028.0008AR45non1616CorrectedTotal弹性1弹性2115.75061.93815153RSquared=380(AdjustedRSquared二-.033)bRSquared=603(AdjustedRSquared=.339)PostHocTests拉伸倍数HomogeneousSubsets弹性1Student-Newman-Keuls*'C拉伸倍数NSubset1640

13、47150460473.75580474.25520475.00Sig.874Meansforgroupsinhomogeneoussubsetsaredisplayed.BasedonTypeIIISumofSquaresTheerrortermisMeanSquare(Error)=7.972.aUsesHarmonicMeanSampleSize=4.000.b. Thegroupsizesareunequal.Theharmonicmeanofthegroupsizesisused.TypeIerrorlevelsarenotguaranteedc. Alpha=.05.弹性2Stud

14、ent-Newman-Keulsa,b-c拉伸倍数NSubset1640472.754-60473.50520474.00580474.00Sig.,715Meansforgroupsinhomogeneoussubsetsaredisplayed.BasedonTypeIIISumofSquaresTheerrortermisMeanSquare(Error)=2.729.a.UsesHarmonicMeanSampleSize=4.000.t>.Thegroupsizesareunequal.TheharmonicmeanofthegroupsizesisusedTypeIerror

15、levelsarenotguaranteed.d. Alpha=.05.收缩率HomogeneousSubsets弹性1Student-Newman-Keuls3,b,&收好NSubset112048Sig.444471.7573.7575.2575.75.255Meansforgroupsinhomogeneoussubsetsaredisplayed.BasedonTypeIIISumofSquaresTheerrortermisMeanSquare(Error)=7.972.aUsesHarmonicMeanSampleSize=4.000.b. Thegroupsizesare

16、unequal.Theharmonicmeanofthegroupsizesisused.TypeIerrorlevelsarenotguaranteed.c. Alpha=.05.弹性2Student-Newman-Keuls8b,c收籀案NSubset1212084Sig.444471.2573.5074.50,05173.5074.5075.00,438Meansforgroupsinhomogeneoussubsetsaredisplayed.BasedonTypeIIISumofSquaresTheerrortermisMeanSquare(Error)=2.729.a. UsesHarmonicMeanSampleSire=4.000.b. Thegroupsizesareunequal.Theharmonicmeanofthegroupsizesisused.TypeIerrorlevelsarenotguaranteed.c. Alpha=,05.弹性1EstimatedMarginalMeansof弹性17371收缩出812Estimated Marginal Means of 弹性 2拉伸侪数弹性2EstimatedMarginalMeansof弹性204收缩率