Determining sexual dimorphism in frog measurement data: integration of statistical significance, measurement error, effect size and biological significance
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| Natura: | Artículo científico |
| Lingua: | en |
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Academia Brasileira de Ciências
2005
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| _version_ | 1876479030310469632 |
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| author | Lee-Ann C. Hayek |
| author_facet | Lee-Ann C. Hayek |
| contents | Determining sexual dimorphism in frog measurement data: integration of statistical significance, measurement error, effect size and biological significance Lee-Ann C. Hayek W. Ronald Heyer Multidisciplinaria (Ciencias Naturales y Exactas) fro statistics effectsize sexualdimorphism measurementerrorindex Severalanalytictechniqueshavebeenusedtodeterminesexualdimorphisminvertebratemorphologicalmeasurementdatawithnoemergentconsensusonwhichtechniqueissuperior.Afurtherconfoundingproblemforfrogdataistheexistenceofconsiderablemeasurementerror.Todeterminedimorphism,weexamineasinglehypothesis(Ho=equalmeans)fortwogroups(femalesandmales).Wedemonstratethatfrogmeasurementdatameetassumptionsforclearlydefinedstatisticalhypothesistestingwithstatisticallinearmodelsratherthanthoseofexploratorymultivariatetechniquessuchasprincipalcomponents,correlationorcorrespondenceanalysis.Inordertodistinguishbiologicalfromstatisticalsignificanceofhypotheses,weproposeanewprotocolthatincorporatesmeasurementerrorandeffectsize.Measurementerrorisevaluatedwithanovelmeasurementerrorindex.Effectsize,widelyusedinthebehavioralsciencesandinmeta-analysisstudiesinbiology,provestobethemostusefulsinglemetrictoevaluatewhetherstatisticallysignificantresultsarebiologicallymeaningful.Definitionsforarangeofsmall,medium,andlargeeffectsizesspecificallyforfrogmeasurementdataareprovided.ExampleswithmeasurementdataforspeciesofthefroggenusLeptodactylusarepresented.Thenewprotocolisrecommendednotonlytoevaluatesexualdimorphismforfrogdatabutforanyanimalmeasurementdataforwhichthemeasurementerrorindexandobservedorapriorieffectsizescanbecalculated. 2005 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32777105 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.1 Vol.77 |
| format | Artículo científico |
| id | redalyc_32777105 |
| institution | Redalyc |
| language | en |
| publishDate | 2005 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | Determining sexual dimorphism in frog measurement data: integration of statistical significance, measurement error, effect size and biological significance Lee-Ann C. Hayek Multidisciplinaria (Ciencias Naturales y Exactas) fro statistics effectsize sexualdimorphism measurementerrorindex Determining sexual dimorphism in frog measurement data: integration of statistical significance, measurement error, effect size and biological significance Lee-Ann C. Hayek W. Ronald Heyer Multidisciplinaria (Ciencias Naturales y Exactas) fro statistics effectsize sexualdimorphism measurementerrorindex Severalanalytictechniqueshavebeenusedtodeterminesexualdimorphisminvertebratemorphologicalmeasurementdatawithnoemergentconsensusonwhichtechniqueissuperior.Afurtherconfoundingproblemforfrogdataistheexistenceofconsiderablemeasurementerror.Todeterminedimorphism,weexamineasinglehypothesis(Ho=equalmeans)fortwogroups(femalesandmales).Wedemonstratethatfrogmeasurementdatameetassumptionsforclearlydefinedstatisticalhypothesistestingwithstatisticallinearmodelsratherthanthoseofexploratorymultivariatetechniquessuchasprincipalcomponents,correlationorcorrespondenceanalysis.Inordertodistinguishbiologicalfromstatisticalsignificanceofhypotheses,weproposeanewprotocolthatincorporatesmeasurementerrorandeffectsize.Measurementerrorisevaluatedwithanovelmeasurementerrorindex.Effectsize,widelyusedinthebehavioralsciencesandinmeta-analysisstudiesinbiology,provestobethemostusefulsinglemetrictoevaluatewhetherstatisticallysignificantresultsarebiologicallymeaningful.Definitionsforarangeofsmall,medium,andlargeeffectsizesspecificallyforfrogmeasurementdataareprovided.ExampleswithmeasurementdataforspeciesofthefroggenusLeptodactylusarepresented.Thenewprotocolisrecommendednotonlytoevaluatesexualdimorphismforfrogdatabutforanyanimalmeasurementdataforwhichthemeasurementerrorindexandobservedorapriorieffectsizescanbecalculated. 2005 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32777105 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.1 Vol.77 |
| title | Determining sexual dimorphism in frog measurement data: integration of statistical significance, measurement error, effect size and biological significance |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) fro statistics effectsize sexualdimorphism measurementerrorindex |
| url | https://www.redalyc.org/articulo.oa?id=32777105 |