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A Machine Method for Computing the Biserial Correlation Coefficient in Item Validation

Published online by Cambridge University Press:  01 January 2025

Elmer B. Royer
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Abstract

A method for computing the biserial correlation coefficients with the aid of punch card equipment is oultined. A numerical example and a work sheet layout is included in the presentation.

Type
Original Paper
Information
Psychometrika , Volume 6 , Issue 1 , February 1941 , pp. 55 - 59
Copyright
Copyright © 1941 Psychometric Society

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Footnotes

*

This method was developed by Dr. Elmer B. Royer prior to his untimely death on April 3, 1939. It has been prepared for publication by some of his former associates, not only as a contribution to science but also as a tribute to the memory of a true scientist.

References

Dunlap, J. W. Computation of descriptive statistics. New York: Ralph C. Coxhead Corporation. 1937, 78–81.Google Scholar
Dunlap, J. W. and McNamara, W. J. A graphical method for computing the standard error of biserialr. J. exper. Educ., 1934, 2, 274–277.Google Scholar
Pearson, K. On a new method of determining correlation between a measured character A and a character B, of which only the percentage of cases wherein B exceeds of falls short of a given intensity is recorded for each grade of A. Biometrika, 1909, 7, 96–105.CrossRefGoogle Scholar