Formulas are presented for a modification of Pearson's fourfold point correlation possessing always-attainable limits of ± 1 and intermediate values operationally interpretable in terms of proportionate reduction in error of estimation.
References
1.
Costner, H. L.Criteria for measures of association . American Sociological Review, 1965, 30, 341-353.
2.
Cramér, H.Mathematical methods of statistics . Princeton: Princeton University Press, 1946.
3.
Cureton, E. E.Note on Φ/Φ max. Psychometrika, 1959, 24, 89-91.
4.
Ferguson, G. A.Statistical analysis in psychology and education. New York: McGraw-Hill , 1959.
5.
Francis, R. G.The rhetoric of science. Minneapolis : The University of Minnesota Press, 1961.
6.
Guilford, J. P.Fundamental statistics in psychology and education. (2nd ed.) New York: McGraw-Hill, 1950.
7.
McNemar, Q.Psychological statistics. (3rd ed.) New York: John Wiley, 1962.
8.
Tschuprow (Chuprov), A. A.Principles of the mathematical theory of correlation (trans. by M. Kantorowitsch. London : W. Hodge, 1939.
