Effectsizeisastatisticalconceptthatmeasuresthemagnitudeofaphenomenonorthestrengthoftherelationshipbetweenvariables.Unlikep-values,whichindicatewhetheraneffectexists,effectsizequantifieshowlargeormeaningfulthateffectis.CommontypesofeffectsizeincludeCohen'sd(fordifferencesbetweengroups),Pearson'sr(forcorrelations),andoddsratios(forbinaryoutcomes).Researchersuseeffectsizestoassesspracticalsignificance,compareresultsacrossstudies,andperformpoweranalysesforsamplesizeplanning.Effectsizesareparticularlyvaluableinmeta-analysesandevidence-basedresearch,astheyprovideastandardizedwaytointerpretfindingsbeyondstatisticalsignificance.
