von bele » Mo 23. Jan 2023, 18:08
PonderStibbons hat geschrieben:Goodman & Kruskal's Gamma ist ein Korrelationsmaß für ordinale Variablen.
@PonderStibbons: Vielen Dank für die Aufklärung.
@Mitzi: Schau Dir diese Studie mal an: Atila Göktaş, Öznur İşçi: A Comparison of the Most Commonly Used
Measures of Association for Doubly Ordered Square Contingency Tables via Simulation
https://mz.mf.uni-lj.si/article/download/112/103/109Ich habe das nicht vollständig gelesen, aber die Abbildungen ab Seite 15 und die Zusammenfassung sind ganz hilfreich:
As can be seen from Figure 1a for Table dimension 3x3 and 4x4 Gamma ordinal
measure of association presents closer estimate of the degree of association which
is expected to be 0.5 in comparison with the other ordinal measures. However it
can be concluded from the same figure that Pearson’s correlation and Spearman’s
rank correlation presents a good estimate of the actual degree of association as
table dimension increases
Viele Grüße,
Bernhard
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