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dbr:Polychoric_correlation
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Correlação policórica Polychoric correlation Korrelazio koefiziente tetrakoriko
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Korrelazio koefiziente tetrakorikoa, bi arteko korrelazioa neurtzeko koefizientea da, bi aldagai dikotomikoak era ezkutu edo sorrean banaketa normalaren araberakoak direla pentsatzen delarik. Karl Pearson estatistikariak asmatu zuen 1901. urtean. Korrelazio tetrakorikoa korrelazio polikorikoaren kasu berezia da, non bi aldagaiak diren. Psikometrian erabili ohi da, aldagaiak era kuantitatiboan neurtzeko zailtasuna dela eta, askotan elementuak edo banakoak bi sailetan banatzen direlako (adibidez, azterketa bat gainditu edo ez gainditu, test edo estimulu baten aurrean erantzuna positiboa edo negatiboa izan den). Ez da erabili behar aldagaiak berez dikotomikoak direnean (adibidez, sexua). In statistics, polychoric correlation is a technique for estimating the correlation between two hypothesised normally distributed continuous latent variables, from two observed ordinal variables. Tetrachoric correlation is a special case of the polychoric correlation applicable when both observed variables are dichotomous. These names derive from the polychoric and tetrachoric series which are used for estimation of these correlations. Em estatística, a correlação policórica é uma técnica para estimar a correlação entre duas hipóteses de variáveis latentes contínuas com distribuição normal, a partir de duas variáveis ordinais observadas. A correlação tetracórica é um caso especial da correlação policórica aplicável quando ambas as variáveis observadas são dicotômicas. Esses nomes derivam das séries policóricas e tetracóricas que são usadas para estimar essas correlações.
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In statistics, polychoric correlation is a technique for estimating the correlation between two hypothesised normally distributed continuous latent variables, from two observed ordinal variables. Tetrachoric correlation is a special case of the polychoric correlation applicable when both observed variables are dichotomous. These names derive from the polychoric and tetrachoric series which are used for estimation of these correlations. Em estatística, a correlação policórica é uma técnica para estimar a correlação entre duas hipóteses de variáveis latentes contínuas com distribuição normal, a partir de duas variáveis ordinais observadas. A correlação tetracórica é um caso especial da correlação policórica aplicável quando ambas as variáveis observadas são dicotômicas. Esses nomes derivam das séries policóricas e tetracóricas que são usadas para estimar essas correlações. Korrelazio koefiziente tetrakorikoa, bi arteko korrelazioa neurtzeko koefizientea da, bi aldagai dikotomikoak era ezkutu edo sorrean banaketa normalaren araberakoak direla pentsatzen delarik. Karl Pearson estatistikariak asmatu zuen 1901. urtean. Korrelazio tetrakorikoa korrelazio polikorikoaren kasu berezia da, non bi aldagaiak diren. Psikometrian erabili ohi da, aldagaiak era kuantitatiboan neurtzeko zailtasuna dela eta, askotan elementuak edo banakoak bi sailetan banatzen direlako (adibidez, azterketa bat gainditu edo ez gainditu, test edo estimulu baten aurrean erantzuna positiboa edo negatiboa izan den). Ez da erabili behar aldagaiak berez dikotomikoak direnean (adibidez, sexua). Bi aldagai dikotomikoen arteko korrelazioa edo asoziazioa aztertzeko beste teknika batzuk badaude, phi koefizientea esaterako, baina hauek korrelazioa sistematikoki gutxietsi egiten dutela frogatu izan da. Korrelazio koefiziente tetrakorikoa korrelazio maila zehatzagoa ematen saiatzen da, aldagai dikotomikoen ezkutuan banaketa normalaren araberakoak diren bi aldagai kuantitatibo daudela pentsatuz betiere.
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