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1、研究期末成绩受哪些因素影响？其影响程度的情况?半期成期末成每周学习时入学等教师等班级绩绩间级级185874221198964511174803521187904021186883812175703532165672832178723022164703032182753412189863812273773823272683223260652033266613033289933921288884311282804113280853923283854523277804033297965011初步设定回归方程：y = P 0 + Pl p + P 2i + P 3t + eDescriptive St
2、atisticsMeanStd. DeviationN期末成绩79.9510.33022班级1.50.51222每周学习时间36.916.76822半期成绩79.5510.29422入学等级1.95.78522教师等级2.05.84422表中为各因素的均值，标准差，和样本量。Correlations期末成绩班级每周学习时间半期成绩入学等级教师等级Pearson Correlation期末成绩1.000-.014.860.921-.681-.595班级-.0141.000.151-.072.059.496每周学习时间.860.1511.000.863-.619-.383半期成绩.921-.072
3、.8631.000-.798-.573入学等级-.681.059-.619-.7981.000.362教师等级-.595.496-.383-.573.3621.000Sig. (1-tailed)期末成绩.476.000.000.000.002班级.476.251.375.397.009每周学习时间.000.251.000.001.039半期成绩.000.375.000.000.003入学等级.000.397.001.000.049教师等级.002.009.039.003.049N期末成绩222222222222班级222222222222每周学习时间222222222222半期成绩22222
4、2222222入学等级222222222222教师等级222222222222表中为各因素的相关系数和P值，从表中可看出班级的相关性最低Variables Entered/RemovedbModelVariablesEnteredVariablesRemovedMethod1教师等级，入学 等级，班级，每周 学习时间，半期 成绩aEnter2入学等级Backward (criterion: Probability of F-to-remov e = .100).3Backward(criterion:班级Probability of F-to-remov e = .100).4Backward
5、(criterion:教师等级Probability of F-to-remov e = .100).5Backward(criterion:每周学习时间Probability of F-to-remov e = .100).a. All requested variables entered.b. Dependent Variable:期末成绩采用向后剔除法，即每次剔除一个最不符合进入模型判断依据的变量，直到回归 方程中不再含有不符合判断依据的自变量为止。Model SummaryfModelRRSquareAdjusted R SquareStd. Error of the Estimat
6、eChange StatisticsDurbin-WatsonR Square ChangeFChangedf1df2Sig. FChange1.941a.885.8494.014.88524.620516.0002.940b.884.8573.906.000.102116.7543.938c.879.8593.875-.005.715117.4104930d.865.8503.996-.0152.200118.1555.921e.848.8404.126-.0172.327119.1442.737a. Predictors: (Constant),教师等级，入学等级，班级，每周学习时间，半期
7、成绩b. Predictors: (Constant),教师等级，班级，每周学习时间，半期成绩c. Predictors: (Constant),教师等级，每周学习时间，半期成绩d. Predictors: (Constant),每周学习时间，半期成绩e. Predictors: (Constant),半期成绩f. Dependent Variable:期末成绩首先剔除了入学等级，然后剔除了班级，再次剔除了教师等级，再后剔除了每周 学习时间，最后剔除半期成绩，剩下了期末成绩，从剔除顺序可知各因素对期末 成绩的影响程度，入学等级最低，半期成绩最高。ANOVAfModelSum of Square
8、sdfMean SquareFSig.1Regression1983.1875396.63724.620000aResidual257.7681616.110Total2240.955212Regression1981.5464495.38732.465000bResidual259.4081715.259Total2240.955213Regression1970.6413656.88043.741.000cResidual270.3131815.017Total2240.955214Regression1937.6052968.80360.680.000dResidual303.34919
9、15.966Total2240.955215Regression1900.45611900.456111.628000eResidual340.4982017.025Total2240.95521a. Predictors: (Constant),教师等级，入学等级，班级，每周学习时间，半期成绩b. Predictors: (Constant),教师等级，班级，每周学习时间，半期成绩c. Predictors: (Constant),教师等级，每周学习时间，半期成绩d. Predictors: (Constant),每周学习时间，半期成绩e. Predictors: (Constant),半期
10、成绩f. Dependent Variable:期末成绩从表中可看出F统计量的值是递增的，即可得出每剔除一个最不符合进入模型判 断依据的变量，F统计量的值都在增加，即模型的整体显著性在增强。CoeficientsaModelUnstandardiz ed CoefficientsStandardiz ed CoefficientstSig.95%ConfidenceInterval for BCorrelationsCollinearity Statis icsBStd.ErrorBetaLowerBoundUpperBoundZero-ord erPartialPartTolera nc e
11、VIF1 (Constan15.9919.51.820.42-25.3657.34t)10489班级.431.7822.199.088.8100-2.8806.444-.014.199.069.6061.651每周学习.20时间.386.293.2531.3176-.2361.008.860.313.112.1955.139半期成绩.637.270.6352.360.03.0651.210.921.508.200.09910.0714入学等级.75.6301.973.048.3194-3.5544.813-.681.080.027.3193.131教师等级-2.3931.576-.195-1.51.14-5.735.949-.595-.355-.12.4332.3078992 (Constan21.1610.572.001.06-1.15243.47t)1624班级
