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| Koefisien Reliabilitas Omega (ω) McDonald× | Koefisien Korelasi Intrakelas (ICC)× | |
|---|---|---|
| Bidang≠ | Psikometri | Statistika |
| Keluarga≠ | Latent structure | Hypothesis test |
| Tahun asal≠ | 1999 | 1979 |
| Pencetus≠ | Roderick P. McDonald | Shrout & Fleiss |
| Tipe≠ | Reliability coefficient / latent variable model | Reliability / agreement coefficient |
| Sumber perintis≠ | McDonald, R. P. (1999). Test Theory: A Unified Treatment. Lawrence Erlbaum Associates. ISBN: 978-0805830750 | Shrout, P.E. & Fleiss, J.L. (1979). Intraclass Correlations: Uses in Assessing Rater Reliability. Psychological Bulletin, 86(2), 420–428. DOI ↗ |
| Alias≠ | omega reliability, ω coefficient, omega total, omega hierarchical | ICC, intraclass correlation, rater reliability coefficient, Sınıf İçi Korelasyon Katsayısı (ICC) |
| Terkait≠ | 6 | 5 |
| Ringkasan≠ | McDonald's omega is a factor-analysis-based reliability coefficient introduced by Roderick P. McDonald (1999) that quantifies the internal consistency of a composite score without requiring the restrictive assumption that all items contribute equally to the latent factor. It yields two complementary indices: ω_total, which captures overall reliability of the sum score, and ω_hierarchical (ωh), which reports how much of the composite's variance is explained specifically by a single general factor. | The Intraclass Correlation Coefficient (ICC) is a parametric reliability statistic that quantifies the degree of agreement or consistency among repeated measurements or multiple raters on a continuous outcome. The modern six-form taxonomy was established by Shrout and Fleiss in 1979 and remains the standard framework for selecting and reporting ICC in inter-rater reliability, test-retest repeatability, and multilevel-data analyses. |
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