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Note on ϕ/ϕmax

Published online by Cambridge University Press:  01 January 2025

Edward E. Cureton
Edward E. Cureton*
Affiliation:
University of Tennessee
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Abstract

Formulas are given for a descriptive statistic related to the fourfold-point correlation but having always-attainable limits ±1.

Information

Type
Original Paper
Information
Psychometrika , Volume 24 , Issue 1 , March 1959 , pp. 89 - 91
Copyright
Copyright © 1959 The Psychometric Society

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References

Ferguson, G. A.. The factorial interpretation of test difficulty. Psychometrika, 1941, 6, 323–329.CrossRefGoogle Scholar
Guilford, J. P.. Fundamental statistics in psychology and education (2nd ed.), New York: McGraw-Hill, 1950.Google Scholar