Transcription of Syntax - Stata
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Syntax - Stata
Equality tests on unmatched dataSyntaxMenuDescriptionOptions for ranksumOptions for medianRemarks and examplesStored resultsMethods and formulasReferencesAlso seeSyntaxWilcoxon rank-sum testranksumvarname[if] [in], by(groupvar)[porder]Nonparametric equality-of-medians testmedianvarname[if] [in] [weight], by(groupvar)[medianoptions]ranksumoption sDescriptionMain by(groupvar)grouping variableporderprobability that variable for first group is larger than variable forsecond groupmedianoptionsDescriptionMain by(groupvar)grouping variableexactperform Fisher s exact testmedianties(below)assign values equal to the median to below groupmedianties(above)assign values equal to the median to above groupmedianties(drop)drop values equal to the median from the analysismedianties(split)split values equal to the median equally between the two groups by(groupvar)is allowed withranksumandmedian; see [D] are allowed withmedian; see[U] >Nonparametric analysis>Tests of hypotheses>Wilcoxon rank-sum testmedianStatistics>Nonparametric analysis>Tests of hypotheses>K-sample equality-of-medians test12 ranksum Equality tests on unmatched dataDescriptionranksumtests the hypothesis that two independent samples (that is,unmatcheddata) are frompopulations with the same distribution by using the Wilcoxon rank-sum test, which is also known asthe Ma
Methods and formulas For a practical introduction to these techniques with an emphasis on examples rather than theory, seeAcock(2014),Bland(2000), orSprent and Smeeton(2007). For a summary of these tests, see Snedecor and Cochran(1989). Methods and formulas are presented under the following headings: ranksum median ranksum
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