BivariateStatisticsTestsofDifferences英文版42621.pptx

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1、 G.22:2000,.:,.,6277,32887-6777:()“”x=Ri=total observed frequency in the ith rowCj=total observed frequency in the jth columnn=sample size(1)(1)2000,.s 50 10 60 15 25 40 65 35 100:X2=3.84 1.X1=mean for Group 1X2=mean for Group 2SX1-X2=the pooled or combined standard error of difference between means

2、.X1=1X2=212=.S12=1S22=2n1=1n2=2 S12=1S22=2n1=1n2=2.=n-k:n=n1+n2 k=()-P-:P1=P2:P1-P2=0A p1=1p2=2(p1-p1)=1 1 12=-p=a p=(1-p)a a n1=1 n2=2-A A m1=m2=m3-pi=individual scores,i.e.,the ith observation or test unit in the jth grouppi=grand meann=number of all observations or test units in a groupc=number o

3、f jth groups(or columns)-pi=individual scores,i.e.,the ith observation or test unit in the jth grouppi=grand meann=number of all observations or test units in a groupc=number of jth groups(or columns)-=individual scores,i.e.,the ith observation or test unit in the jth group=grand meannj=number of al

4、l observations or test units in a group-A()$.991301188784X1=104.75119.58$.89145143120131X2=134.75 1531299699X1=119.25 A,B,C D,E,F G,H,I J,K,L 1 1,a 1,a Type ofMeasurementDifferences between two independent groupsOrdinalMann-Whitney U-testWilcocon test谢谢5月-2311:53:0811:5311:535月-235月-2311:5311:5311:53:085月-235月-2311:53:082023/5/2011:53:08演讲完毕，谢谢观看！