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1、例解MATLAB统计函数一、工具箱的使用—常用分布函数1.1常用分布函数命令含义chi2cdf(X,V)卡方分布，v是自由度fcdf(X,V1,V2)F分布，v1,v2，为自由度expcdf(X,MU)指数分布，MU为参数poisscdf(X,LMD)泊松分布，LMD为参数normcdf(X,MU,SIGMA)正态分布tcdf(X,V)学生分布，v是自由度unifcdf(X,A,B)区间[A，B]上的均匀分布注：分布函数(CumulativeDistributionFunctionCDF)betacdf
2、Betacumulativedistributionfunction(cdf)binocdfBinomialcumulativedistributionfunction(cdf)cdfSpecifiedcumulativedistributionfunction(cdf)chi2cdfChi-square(χ2)cumulativedistributionfunction(cdf)ecdfEmpirical(Kaplan-Meier)cumulativedistributionfunction(cdf)
3、evcdfExtremevaluecumulativedistributionfunctionexpcdfExponentialcumulativedistributionfunction(cdf)fcdfFcumulativedistributionfunction(cdf)gamcdfGammacumulativedistributionfunction(cdf)geocdfGeometriccumulativedistributionfunction(cdf)gevcdfGeneralizedex
4、tremevaluecumulativedistributionfunctiongpcdfGeneralizedParetocumulativedistributionfunction(cdf)hygecdfHypergeometriccumulativedistributionfunction(cdf)logncdfLognormalcumulativedistributionfunctionnbincdfNegativebinomialcumulativedistributionfunction(c
5、df)ncfcdfNoncentralFcumulativedistributionfunction(cdf)nctcdfNoncentralTcumulativedistributionfunctionncx2cdfNoncentralchi-squarecumulativedistributionfunction(cdf)normcdfNormalcumulativedistributionfunction(cdf)poisscdfPoissoncumulativedistributionfunct
6、ion(cdf)raylcdfRayleighcumulativedistributionfunction(cdf)tcdfStudent'stcumulativedistributionfunction(cdf)unidcdfDiscreteuniformcumulativedistribution(cdf)unifcdfContinuousuniformcumulativedistributionfunction(cdf)wblcdfWeibullcumulativedistributionfunc
7、tion(cdf)1.2常用概率密度函数命令含义chi2pdf(X,V)卡方分布，v是自由度fpdf(X,V1,V2)F分布，v1,v2，为自由度exppdf(X,MU)指数分布，MU为参数poisspdf(X,LMD)泊松分布，LMD为参数normpdf(X,MU,SIGMA)正态分布tpdf(X,V)学生分布，v是自由度unifpdf(X,A,B)区间[A，B]上的均匀分布注：概率密度函数（ProbabilityDensityFunctionPDF）（以mablab7.0为例）betapdfBeta
8、probabilitydensityfunction(pdf)binopdfBinomialprobabilitydensityfunction(pdf)chi2pdfChi-square(χ2)probabilitydensityfunction(pdf)evpdfExtremevalueprobabilitydensityfunctionexppdfExponentialprobabilitydensityfunction(pdf)fp
