t检验-SPSS 有答案

1、.1.23.4.5.6.7.8.9.10.检验结果：检验结果：t=7.003 ，P=0.0000.05,差异具有统计学意义差异具有统计学意义 。因为。因为慢性气管炎患者乙酰胆碱酯酶水平为慢性气管炎患者乙酰胆碱酯酶水平为2.1085，正常人为，正常人为1.44，可认，可认为患者乙酰胆碱水平高于正常人。为患者乙酰胆碱水平高于正常人。11.12.13.14.15.16.17.18.19.变量standard 、new 的P分别为：0.919 和0.942,可认为近似正态分布。（P值，.表示符合正态性，.表示不符合正态性）20.21.22.Paired Samples Statistics12.041

2、7122.39752.692108.7917122.50870.72420STANDARDNEWPair 1MeanNStd. DeviationStd. ErrorMean单变量的统计描述Paired Samples Correlations12.485.110STANDARD & NEWPair 1NCorrelationSig.两变量的相关系数,本例为0.485,P=0.110,无相关关系23.统计量 t双侧配对t检验的P值差异有统计学意义配对变量差值的t检验结果24.25.26. 患者编号患者编号 X X1 1 健康者编号健康者编号 X X2 2 1 4.73 1 2.34 2

3、 6.40 2 2.50 3 2.60 3 1.98 4 3.24 4 1.67 5 6.53 5 1.98 6 5.18 6 3.60 7 5.58 7 2.33 8 3.73 8 3.73 9 4.32 9 4.57 10 5.78 10 4.82 11 3.73 11 5.78 12 4.17 13 4.14 27.28.建立数据库29.文件分割文件分割选择DataSplit FileCompare groups把“Group”调入“Groups Based on”下，OK。30.AnalyzeNonparametric Tests1-Sample K-S将变量GS移入Test Vari

4、able List框内；在Test Distribution中激活“Normal”。单击OK按钮。则得出输出结果。31.One-Sample Kolmogorov-Smirnov Test1215.20834.02164.121.121-.090.419.9951310.84624.22150.204.204-.112.735.652NMeanStd. DeviationNormal Parametersa,bAbsolutePositiveNegativeMost ExtremeDifferencesKolmogorov-Smirnov ZAsymp. Sig. (2-tailed)NMea

5、nStd. DeviationNormal Parametersa,bAbsolutePositiveNegativeMost ExtremeDifferencesKolmogorov-Smirnov ZAsymp. Sig. (2-tailed)GROUP1.002.00GSTest distribution is Normal.a. Calculated from data.b. 32.33.DataSplit File 34.Analyze all cases, do not create groupsOK。回到SPSS主画面35.选择AnalyzeCompare MeansIndepe

6、ndent-sample T Test的主对话框。36.37.38.Group Statistics1215.20834.021641.160951310.84624.221501.17083GROUP1.002.00GSNMeanStd. DeviationStd. ErrorMeanIndependent Samples Test.283.6002.64023.0154.36221.65217.944417.779952.64622.972.0144.36221.64883.951087.77328Equal variances assumedEqual variances notassu

7、medGSFSig.Levenes Test forEquality of VariancestdfSig. (2-tailed)MeanDifferenceStd. ErrorDifferenceLowerUpper95% ConfidenceInterval of theDifferencet-test for Equality of Means方差齐性检验两个独立样本均数的t检验 双侧的P值,该差异具有统计学意义.39.40.41.42.G Gr ro ou up p S St ta at ti is st ti ic cs s127.1842.85984.24821127.1108.7

8、8008.22519组别1.002.00血清胆固醇NMeanStd. DeviationStd. ErrorMeanIndependent Samples TestIndependent Samples Test.344.564.21922.829.07333.33514-.62171.76837.21921.795.829.07333.33514-.62209.76875Equal variancesassumedEqual variancesnot assumed血清胆固醇FSig.Levenes Test forEquality of VariancestdfSig. (2-tailed

9、)MeanDifferenceStd. ErrorDifferenceLowerUpper95% ConfidenceInterval of theDifferencet-test for Equality of Means43.Group StatisticsGroup Statistics127.1842.85984.24821126.6250.92709.26763实验前后.001.00血清胆固醇NMeanStd. DeviationStd. ErrorMeanIndependent Samples TestIndependent Samples Test.057.8141.53222.

10、140.55917.36501-.197821.316161.53221.876.140.55917.36501-.198071.31641Equal variancesassumedEqual variancesnot assumed血清胆固醇FSig.Levenes Test forEquality of VariancestdfSig. (2-tailed)MeanDifferenceStd. ErrorDifferenceLowerUpper95% ConfidenceInterval of theDifferencet-test for Equality of Means44.Gro

11、up StatisticsGroup Statistics127.1108.78008.22519126.9642.74990.21648实验前后.001.00血清胆固醇NMeanStd. DeviationStd. ErrorMeanI In nd de ep pe en nd de en nt t S Sa am mp pl le es s T Te es st t.061.808.47022.643.14667.31237-.50114.79447.47021.966.643.14667.31237-.50120.79453Equal variancesassumedEqual vari

12、ancesnot assumed血清胆固醇FSig.Levenes Test forEquality of VariancestdfSig. (2-tailed)MeanDifferenceStd. ErrorDifferenceLowerUpper95% ConfidenceInterval of theDifferencet-test for Equality of Means以上对甲乙组，分别用以上对甲乙组，分别用T-test是错误的！是错误的！应该使用配对应该使用配对T-test！45.O On ne e- -S Sa am mp pl le e K Ko ol lm mo og go

13、 or ro ov v- -S Sm mi ir rn no ov v T Te es st t12127.18426.6250.85984.92709.195.167.195.157-.106-.167.676.578.751.892NMeanStd. DeviationNormal Parametersa,bAbsolutePositiveNegativeMost ExtremeDifferencesKolmogorov-Smirnov ZAsymp. Sig. (2-tailed)实验前试验后Test distribution is Normal.a. Calculated from d

14、ata.b. P Pa ai ir re ed d S Sa am mp pl le es s T Te es st t.55917.61095.17637.17099.947353.17011.009实验前 - 试验后Pair 1MeanStd. DeviationStd. ErrorMeanLowerUpper95% ConfidenceInterval of theDifferencePaired DifferencestdfSig. (2-tailed)46.One-Sample Kolmogorov-Smirnov TestOne-Sample Kolmogorov-Smirnov

15、Test12127.11086.9642.78008.74990.306.268.306.268-.181-.2061.062.929.210.354NMeanStd. DeviationNormal Parametersa,bAbsolutePositiveNegativeMost ExtremeDifferencesKolmogorov-Smirnov ZAsymp. Sig. (2-tailed)实验前试验后Test distribution is Normal.a. Calculated from data.b. P Pa ai ir re ed d S Sa am mp pl le

16、es s T Te es st t.14667.21073.06083.01278.280562.41111.035实验前 - 试验后Pair 1MeanStd. DeviationStd. ErrorMeanLowerUpper95% ConfidenceInterval of theDifferencePaired DifferencestdfSig. (2-tailed)47.G Gr ro ou up p S St ta at ti is st ti ic cs s12-.5592.61095.1763712-.1467.21073.06083组别1.002.00降胆NMeanStd. DeviationStd. ErrorMeanIndependent Samples TestIndependent Samples Test5.072.035-2.21122.038-.41250.18656-.79941-.02559-2.21