KMO(r)
H.~F. Kaiser and J.~Rice. (1974) Little jiffy, mark iv. Educational and Psychological Measurement, 34(1):111--117.
Dziuban, Charles D. and Shirkey, Edwin C. (1974) When is a correlation matrix appropriate for factor analysis? Some decision rules. Psychological Bulletin, 81 (6) 358 - 361.
fa
, Harman.political
.KMO(Thurstone)
KMO(Harman.political) #compare to the results in Dziuban and Shirkey (1974)
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