t檢驗SPSS有答案PPT學習教案

1、會計學1t檢驗檢驗SPSS有答案有答案第1頁/共47頁第2頁/共47頁第3頁/共47頁第4頁/共47頁第5頁/共47頁第6頁/共47頁第7頁/共47頁第8頁/共47頁檢驗結果：檢驗結果：t=7.003 ，P=0.0000.05,差異具有統(tǒng)計學意義差異具有統(tǒng)計學意義 。因為。因為慢性氣管炎患者乙酰膽堿酯酶水平為，正常人為，可認慢性氣管炎患者乙酰膽堿酯酶水平為，正常人為，可認為患者乙酰膽堿水平高于正常人。為患者乙酰膽堿水平高于正常人。第9頁/共47頁第10頁/共47頁第11頁/共47頁第12頁/共47頁第13頁/共47頁第14頁/共47頁第15頁/共47頁第16頁/共47頁第17頁/共47頁變量s

2、tandard 、new 的P分別為：0.919 和0.942,可認為近似正態(tài)分布。（P值，.表示符合正態(tài)性，.表示不符合正態(tài)性）第18頁/共47頁第19頁/共47頁第20頁/共47頁Paired Samples Statistics12.0417122.39752.692108.7917122.50870.72420STANDARDNEWPair 1MeanNStd. DeviationStd. ErrorMean單變量的統(tǒng)計描述Paired Samples Correlations12.485.110STANDARD & NEWPair 1NCorrelationSig.兩變量的相

3、關系數(shù),本例為0.485,P=0.110,無相關關系第21頁/共47頁統(tǒng)計量 t雙側配對t檢驗的P值差異有統(tǒng)計學意義配對變量差值的t檢驗結果第22頁/共47頁第23頁/共47頁第24頁/共47頁 患者編號患者編號 X X1 1 健康者編號健康者編號 X X2 2 5 6.53 5 1.98 9 4.32 9 4.57 12 4.17 第25頁/共47頁第26頁/共47頁建立數(shù)據(jù)庫第27頁/共47頁文件分割文件分割選擇DataSplit FileCompare groups把“Group”調入“Groups Based on”下，OK。第28頁/共47頁AnalyzeNonparametric

4、Tests1-Sample K-S將變量GS移入Test Variable List框內；在Test Distribution中激活“Normal”。單擊OK按鈕。則得出輸出結果。第29頁/共47頁One-Sample Kolmogorov-Smirnov Test1215.20834.02164.121.121-.090.419.9951310.84624.22150.204.204-.112.735.652NMeanStd. DeviationNormal Parametersa,bAbsolutePositiveNegativeMost ExtremeDifferencesKolmogo

5、rov-Smirnov ZAsymp. Sig. (2-tailed)NMeanStd. DeviationNormal Parametersa,bAbsolutePositiveNegativeMost ExtremeDifferencesKolmogorov-Smirnov ZAsymp. Sig. (2-tailed)GROUP1.002.00GSTest distribution is Normal.a. Calculated from data.b. 第30頁/共47頁第31頁/共47頁DataSplit File 第32頁/共47頁Analyze all cases, do not

6、 create groupsOK。回到SPSS主畫面第33頁/共47頁選擇AnalyzeCompare MeansIndependent-sample T Test的主對話框。第34頁/共47頁第35頁/共47頁第36頁/共47頁Group Statistics1215.20834.021641.160951310.84624.221501.17083GROUP1.002.00GSNMeanStd. DeviationStd. ErrorMeanIndependent Samples Test.283.6002.64023.0154.36221.65217.944417.779952.6462

7、2.972.0144.36221.64883.951087.77328Equal variances assumedEqual variances notassumedGSFSig.Levenes Test forEquality of VariancestdfSig. (2-tailed)MeanDifferenceStd. ErrorDifferenceLowerUpper95% ConfidenceInterval of theDifferencet-test for Equality of Means方差齊性檢驗兩個獨立樣本均數(shù)的t檢驗 雙側的P值,該差異具有統(tǒng)計學意義.第37頁/共4

8、7頁第38頁/共47頁第39頁/共47頁第40頁/共47頁G Gr ro ou up p S St ta at ti is st ti ic cs s127.1842.85984.24821127.1108.78008.22519組別1.002.00血清膽固醇NMeanStd. DeviationStd. ErrorMeanIndependent Samples TestIndependent Samples Test.344.564.21922.829.07333.33514-.62171.76837.21921.795.829.07333.33514-.62209.76875Equal v

9、ariancesassumedEqual variancesnot assumed血清膽固醇FSig.Levenes Test forEquality of VariancestdfSig. (2-tailed)MeanDifferenceStd. ErrorDifferenceLowerUpper95% ConfidenceInterval of theDifferencet-test for Equality of Means第41頁/共47頁Group StatisticsGroup Statistics127.1842.85984.24821126.6250.92709.26763實驗

10、前后.001.00血清膽固醇NMeanStd. DeviationStd. ErrorMeanIndependent Samples TestIndependent Samples Test.057.8141.53222.140.55917.36501-.197821.316161.53221.876.140.55917.36501-.198071.31641Equal variancesassumedEqual variancesnot assumed血清膽固醇FSig.Levenes Test forEquality of VariancestdfSig. (2-tailed)MeanDi

11、fferenceStd. ErrorDifferenceLowerUpper95% ConfidenceInterval of theDifferencet-test for Equality of Means第42頁/共47頁Group StatisticsGroup Statistics127.1108.78008.22519126.9642.74990.21648實驗前后.001.00血清膽固醇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 s

12、t t.061.808.47022.643.14667.31237-.50114.79447.47021.966.643.14667.31237-.50120.79453Equal variancesassumedEqual variancesnot assumed血清膽固醇FSig.Levenes Test forEquality of VariancestdfSig. (2-tailed)MeanDifferenceStd. ErrorDifferenceLowerUpper95% ConfidenceInterval of theDifferencet-test for Equality

13、 of Means以上對甲乙組，分別用以上對甲乙組，分別用T-test是錯誤的！是錯誤的！應該使用配對應該使用配對T-test！第43頁/共47頁O On ne e- -S Sa am mp pl le e K Ko ol lm mo og go 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,bAbsolutePositiveNega

14、tiveMost ExtremeDifferencesKolmogorov-Smirnov ZAsymp. Sig. (2-tailed)實驗前試驗后Test distribution is Normal.a. Calculated from data.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實驗前 - 試驗后Pair 1MeanStd. DeviationStd. ErrorMeanLowerUpper95% ConfidenceInter

15、val of theDifferencePaired DifferencestdfSig. (2-tailed)第44頁/共47頁One-Sample Kolmogorov-Smirnov TestOne-Sample Kolmogorov-Smirnov Test12127.11086.9642.78008.74990.306.268.306.268-.181-.2061.062.929.210.354NMeanStd. DeviationNormal Parametersa,bAbsolutePositiveNegativeMost ExtremeDifferencesKolmogorov

16、-Smirnov ZAsymp. Sig. (2-tailed)實驗前試驗后Test distribution is Normal.a. Calculated from data.b. P Pa ai ir re ed d S Sa am mp pl le es s T Te es st t.14667.21073.06083.01278.280562.41111.035實驗前 - 試驗后Pair 1MeanStd. DeviationStd. ErrorMeanLowerUpper95% ConfidenceInterval of theDifferencePaired DifferencestdfSig. (2-tailed)第45頁/共47頁G Gr ro ou up p S St ta at ti is st ti ic cs s12-.5592.61095.1763712-.1467.21073.06083組別1.002.00降膽NMeanStd. DeviationStd. ErrorMeanIndependent Samples TestIndependent Samples Test5.072.035-2.21122.038-.41250.18656-.79941-.02559-2.2111