《非参数统计》与MATLAB编程 第六章 多样本问题.pdfVIP

第六章多样本问题

§6.1Kruskal-Wallis检验

p=kruskalwallis(X)

p=kruskalwallis(X,group)

p=kruskalwallis(X,group,on)%显示方差分析表和箱线图

p=kruskalwallis(X,group,off)%不显示方差分析表和箱线

图

[p,table]=kruskalwallis(...)

[p,table,stats]=kruskalwallis(...)

详细解说请看MATLAB的帮助文件

score=[8472759572907575658055956958788062

657242];

college={a,a,a,a,a,a,a,b,b,b,b,b

,b,c,c,c,c,c,c,c,};

[p,anvotab,stats]=kruskalwallis(score,college)

p=

0.1294

anvotab=

SourceSSdfMSChi-sqProbChi-sq

Groups[141.9821][2][70.9911][4.0905][0.1294]

Error[517.5179][17][30.4422][][]

Total[659.5000][19][][][]

stats=

gnames:{3x1cell}

n:[767]

source:kruskalwallis

meanranks:[13.785710.25007.4286]

sumt:

66

Clickonthegroupyouwanttotest

a

b

c

24681012141618

Nogroupshavemeanrankssignificantlydifferentfromc

并得到方差分析表和下面的箱线图：

SourceSSdfMSChi-sqProbChi-sq

Groups141.98270.9914.090.1294

Error517.521730.442

Total659.519

s

e80

u

l

a

V

60

40

ABC

[p,table,stats]=kruskalwallis(score,college,off)

p=

0.1294

table=

SourceSSdfMSChi-sqProbChi-sq

Groups[141.9821][2][70.9911][4.0905][0.1294]

Error[517.5179][17][30.4422][][]

Total[659.5000][19][][][]

stats=

gnames:{3x1cell}

n:[767]

source:kruskalwallis

meanranks:[13.785710.25007.4286]

sumt:66