specieslet美人2

let美人2  时间:2021-01-15  阅读:()
Titlestata.
commvtestcorrelations—MultivariatetestsofcorrelationsDescriptionQuickstartMenuSyntaxOptionsformultiple-sampletestsOptionsforone-sampletestsRemarksandexamplesStoredresultsMethodsandformulasReferencesAlsoseeDescriptionmvtestcorrelationsperformsone-sampleandmultiple-sampletestsoncorrelations.
Thesetestsassumemultivariatenormality.
See[MV]mvtestformoremultivariatetests.
QuickstartLawley'stestthatthecorrelationsofvariablesv1,v2,v3,andv4areequalmvtestcorrelationsv1v2v3v4Jennrich'stestthatthecorrelationmatrixequalshypothesizedmatrixmymatmvtestcorrelationsv1v2v3v4,equals(mymat)Jennrich'stestforequalcorrelationswithsamplesdenedbycatvarmvtestcorrelationsv1v2v3v4v5,by(catvar)MenuStatistics>Multivariateanalysis>MANOVA,multivariateregression,andrelated>Multivariatetestofmeans,covariances,andnormality12mvtestcorrelations—MultivariatetestsofcorrelationsSyntaxMultiple-sampletestsmvtestcorrelationsvarlistifinweight,by(groupvars)multisampleoptionsOne-sampletestsmvtestcorrelationsvarlistifinweight,one-sampleoptionsmultisampleoptionsDescriptionModelby(groupvars)comparesubsampleswithsamevaluesingroupvarsmissingtreatmissingvaluesingroupvarsasordinaryvaluesby(groupvars)isrequired.
one-sampleoptionsDescriptionOptionscompoundtestthatcorrelationmatrixiscompoundsymmetric(equalcorrelations);thedefaultequals(C)testthatcorrelationmatrixequalsmatrixCbootstrap,by,jackknife,rolling,andstatsbyareallowed;see[U]11.
1.
10Prexcommands.
Weightsarenotallowedwiththebootstrapprex;see[R]bootstrap.
aweightsarenotallowedwiththejackknifeprex;see[R]jackknife.
aweightsandfweightsareallowed;see[U]11.
1.
6weight.
Optionsformultiple-sampletestsModelby(groupvars)isrequiredwiththemultiple-sampleversionofthetest.
Observationswiththesamevaluesingroupvarsformeachsample.
Observationswithmissingvaluesingroupvarsareignored,unlessthemissingoptionisspecied.
AWaldtestduetoJennrich(1970)isdisplayed.
missingspeciesthatmissingvaluesingroupvarsaretreatedlikeordinaryvalues.
Optionsforone-sampletestsOptionscompound,thedefault,teststhehypothesisthatthecorrelationmatrixofthevariablesiscompoundsymmetric,thatis,thatthecorrelationsofallvariablesinvarlistarethesame.
Lawley's(1963)chi-squaredtestisdisplayed.
equals(C)teststhehypothesisthatthecorrelationmatrixofvarlistisC.
ThematrixCshouldbek*k,symmetric,andpositivedenite.
Cisconvertedtoacorrelationmatrixifneeded.
TherowandcolumnnamesofCareimmaterial.
AWaldtestduetoJennrich(1970)isdisplayed.
mvtestcorrelations—Multivariatetestsofcorrelations3Remarksandexamplesstata.
comRemarksarepresentedunderthefollowingheadings:One-sampletestsforcorrelationmatricesAmultiple-sampletestforcorrelationmatricesOne-sampletestsforcorrelationmatricesBothone-sampleandmultiple-sampletestsofcorrelationmatricesareprovidedwiththemvtestcorrelationscommand.
Theone-sampletestsincludeLawley's(1963)testthatthecorrelationmatrixiscompoundsymmetric(thatis,allcorrelationsareequal),andtheWaldtestproposedbyJennrich(1970)thatthecorrelationmatrixequalsagivencorrelationmatrix.
Example1Thegasoline-poweredmilk-truckdatasetintroducedinexample1of[MV]mvtestmeanshaspricepermileforfuel,repair,andcapital.
Wetestifthecorrelationsbetweenthesethreevariablesareequal(thatis,thecorrelationmatrixiscompoundsymmetric)usingthecompoundoptionofmvtestcorrelations.
.
usehttps://www.
stata-press.
com/data/r16/milktruck(Milktransportationcostsfor25gasolinetrucks(JohnsonandWichern2007)).
mvtestcorrelationsfuelrepaircapital,compoundTestthatcorrelationmatrixiscompoundsymmetric(allcorrelationsequal)Lawleychi2(2)=7.
75Prob>chi2=0.
0208Werejectthenullhypothesisandconcludethatthereareprobablydifferencesinthecorrelationsofthethreecostvariables.
Example2Usingtheequals()optionofmvtestcorrelations,wetestthehypothesisthatfuelandrepaircostshaveacorrelationof0.
75,whilethecorrelationbetweencapitalandthesetwovariablesiszero.
.
matrixC=(1,0.
75,0\0.
75,1,0\0,0,1).
matrixlistCsymmetricC[3,3]c1c2c3r11r2.
751r3001.
mvtestcorrelationsfuelrepaircapital,equals(C)TestthatcorrelationmatrixequalsspecifiedpatternCJennrichchi2(3)=4.
55Prob>chi2=0.
2077Wefailtorejectthisnullhypothesis.
4mvtestcorrelations—MultivariatetestsofcorrelationsAmultiple-sampletestforcorrelationmatricesAmultiple-sampletestofequalityofcorrelationmatricesisprovidedbythemvtestcorrelationscommandwiththeby()optiondeningthemultiplesamples(groups).
Example3Psychologicaltestscoredataareintroducedinexample2of[MV]mvtestcovariances.
Wetestwhetherthecorrelationmatricesforthefourtestscoresarethesameformalesandfemales.
.
usehttps://www.
stata-press.
com/data/r16/genderpsych(FourPsychologicalTestScores,RencherandChristensen(2012)).
mvtestcorrelationsy1y2y3y4,by(gender)TestofequalityofcorrelationmatricesacrosssamplesJennrichchi2(6)=5.
01Prob>chi2=0.
5422Wefailtorejectthenullhypothesisofequalcorrelationmatricesformalesandfemales.
Storedresultsmvtestcorrelationsstoresthefollowinginr():Scalarsr(chi2)χ2statisticr(df)degreesoffreedomforχ2testr(pchi2)p-valueforχ2testMacrosr(chi2type)typeofmodelχ2testMethodsandformulasMethodsandformulasarepresentedunderthefollowingheadings:One-sampletestsforcorrelationmatricesAmultiple-sampletestforcorrelationmatricesOne-sampletestsforcorrelationmatricesLetthesampleconsistofNi.
i.
d.
observationsfromak-variatemultivariatenormaldistributionMVNk(,Σ),withsamplecorrelationmatrixR.
Totestthatacorrelationmatrixequalsagivenmatrix,R0,mvtestcorrelationscomputesaWaldtestproposedbyJennrich(1970):χ2ocf=12trace(ZZ)diagonal(Z)I+R0R101diagonal(Z)whereZ=√NR10(RR0)anddenotestheHadamardproduct.
χ2ocfisasymptoticallyχ2distributedwithk(k1)/2degreesoffreedom.
mvtestcorrelations—Multivariatetestsofcorrelations5Totestthatthecorrelationmatrixiscompoundsymmetric,thatis,totestthatallcorrelationsareequal,thelikelihood-ratiotestissomewhatcumbersome.
Lawley(1963)offersanasymptoticallyequivalenttestthatiscomputationallysimple(JohnsonandWichern2007,457–458):χ2occ=N1(1R)2ki=2i1j=1(RijR)2ukh=1(RhR)2whereR=2k(k1)ki=2i1j=1RijRh=1k1ki=1;i=hRihu=(k1)21(1R)2k(k2)(1R)2andRijdenoteselement(i,j)ofthek*kcorrelationmatrixR.
χ2occisasymptoticallyχ2distributedwith(k2)(k+1)/2degreesoffreedom.
Aitkin,Nelson,andReinfurt(1968)studythequalityofthisχ2approximationforkuptosixandvariouscorrelations,andconcludethattheapproximationisadequateforNassmallas25.
Amultiple-sampletestforcorrelationmatricesLettherebem≥2independentsampleswiththejthsamplecontainingNji.
i.
d.
observationsfromak-variatemultivariatenormaldistribution,MVNk(j,Σj),withsamplecorrelationmatrixRj,j=1,m.
LetN=mj=1Nj.
Totestfortheequalityofcorrelationmatricesacrossmindependentsamples,mvtestcorrela-tionscomputesaWaldtestproposedbyJennrich(1970):χ2mc=mj=112traceZ2jdiagonal(Zj)I+RR11diagonal(Zj)whereR=1/Nmj=1NjRj,Zj=NjR1RjR,anddenotestheHadamardproduct.
χ2mcisasymptoticallyχ2distributedwith(m1)k(k1)/2degreesoffreedom.
ReferencesAitkin,M.
A.
,W.
C.
Nelson,andK.
H.
Reinfurt.
1968.
Testsforcorrelationmatrices.
Biometrika55:327–334.
Jennrich,R.
I.
1970.
Anasymptoticχ2testfortheequalityoftwocorrelationmatrices.
JournaloftheAmericanStatisticalAssociation65:904–912.
Johnson,R.
A.
,andD.
W.
Wichern.
2007.
AppliedMultivariateStatisticalAnalysis.
6thed.
EnglewoodCliffs,NJ:PrenticeHall.
Lawley,D.
N.
1963.
Ontestingasetofcorrelationcoefcientsforequality.
AnnalsofMathematicalStatistics34:149–151.
Rencher,A.
C.
,andW.
F.
Christensen.
2012.
MethodsofMultivariateAnalysis.
3rded.
Hoboken,NJ:Wiley.
6mvtestcorrelations—MultivariatetestsofcorrelationsAlsosee[MV]canon—Canonicalcorrelations[R]correlate—Correlationsofvariables

数脉科技香港物理机 E3 16G 10M 华为线路165元 阿里云线路 188元 Cera线路 157元

2021年9月中秋特惠优惠促销来源:数脉科技 编辑:数脉科技编辑部 发布时间:2021-09-11 03:31尊敬的新老客户:9月优惠促销信息如下,10Mbps、 30Mbps、 50Mbps、100Mbps香港优质或BGPN2、阿里云线路、华为云线路,满足多种项目需求!支持测试。全部线路首月五折起。数脉官网 https://my.shuhost.com/香港特价数脉阿里云华为云 10MbpsCN...

收到几个新商家投稿(HostMem,无忧云,青云互联,TTcloud,亚洲云端,趣米云),一起发布排名不分先后

7月份已经过去了一半,炎热的夏季已经来临了,主机圈也开始了大量的夏季促销攻势,近期收到一些商家投稿信息,提供欧美或者亚洲地区主机产品,价格优惠,这里做一个汇总,方便大家参考,排名不分先后,以邮件顺序,少部分因为促销具有一定的时效性,价格已经恢复故暂未列出。HostMem部落曾经分享过一次Hostmem的信息,这是一家提供动态云和经典云的国人VPS商家,其中动态云硬件按小时计费,流量按需使用;而经典...

tmhhost(100元/季)自带windows系统,香港(三网)cn2 gia、日本cn2、韩国cn2、美国(三网)cn2 gia、美国cn2gia200G高防

tmhhost可谓是相当熟悉国内网络情况(资质方面:ISP\ICP\工商齐备),专业售卖海外高端优质线路的云服务器和独立服务器,包括了:香港的三网cn2 gia、日本 cn2、日本软银云服务器、韩国CN2、美国三网cn2 gia 云服务器、美国 cn2 gia +200G高防的。另外还有国内云服务器:镇江BGP 大连BGP数据盘和系统盘分开,自带windows系统,支持支付宝付款和微信,简直就是专...

let美人2为你推荐
虚拟主机代理请问虚拟主机的代理和虚拟主机分销有什么区别?分销的主机是不是可以把主机分给多个用户使用?我用的ResellerClub代理!!免费虚拟主机申请找免费好用的虚拟主机申请地址,免费国内空间跪求国内最好的免费空间!免费国内空间想做一个网站想找个免费的空间最好是国外的,国内的太多都是骗人的或者不稳定的。谢谢!域名主机域名,主机空间和网站文件三者之间的区别是什么查询ip怎么查询IP地址域名购买如何申请购买 永久域名网站域名空间哪个网站的域名空间的便宜?虚拟主机系统虚拟主机采用什么操作系统?mysql虚拟主机哪些类型的虚拟主机支持数据库?
解析域名 ip查域名 免费注册网站域名 科迈动态域名 香港加速器 mach5 账号泄露 监控宝 云主机51web 国外网站代理服务器 个人免费空间 gg广告 网站木马检测工具 qq云端 web服务器是什么 ebay注册 监控服务器 稳定空间 北京主机托管 rewritecond 更多