Porovnat metody
Prohlédněte si vybrané metody vedle sebe; řádky, které se liší, jsou zvýrazněny.
| Ordinální explorační faktorová analýza× | Cronbachovo alfa (analýza spolehlivosti)× | |
|---|---|---|
| Obor≠ | Psychometrika | Statistika |
| Rodina | Latent structure | Latent structure |
| Rok vzniku≠ | 1978–1984 | 1951 |
| Tvůrce≠ | Bengt Muthén | Lee J. Cronbach |
| Typ≠ | Latent variable / dimension reduction | Reliability / internal consistency coefficient |
| Původní zdroj≠ | Flora, D. B. & Curran, P. J. (2004). An empirical evaluation of alternative methods of estimation for confirmatory factor analysis with ordinal data. Psychological Methods, 9(4), 466–491. DOI ↗ | Cronbach, L. J. (1951). Coefficient alpha and the internal structure of tests. Psychometrika, 16(3), 297–334. DOI ↗ |
| Další názvy | ordinal factor analysis, polychoric EFA, categorical EFA, EFA for ordinal data | coefficient alpha, alpha reliability, internal consistency reliability, Güvenilirlik Analizi (Cronbach Alpha) |
| Příbuzné≠ | 5 | 4 |
| Shrnutí≠ | Ordinal exploratory factor analysis discovers latent factors underlying a set of ordinal items — typically Likert scales — by computing polychoric correlations among the items and then applying a weighted least squares estimator. It avoids the distortions that arise when continuous EFA methods are naively applied to ordered categorical responses. | Cronbach's alpha is a coefficient of internal consistency that quantifies the degree to which a set of items on a scale measures the same underlying construct. Introduced by Lee J. Cronbach in 1951, it remains the most widely reported reliability index in social-science, health, and educational research. |
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