Student manual of factor analysis : an elementary exposition of the bi-factor method and its relation to multiple-factor methods /
Holzinger, Karl J.(Karl John),1892-
Swineford, Frances.
Harman, Harry Horace,1913-
University of Chicago.Department of Education.Statistical Laboratory.
Chicago : Statistical Laboratory, Department of Education, University of Chicago,
c1937.
Bibliography: p. 99-101.
Correlation (Statistics)
Ability testing.