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A Prepunched Master Deck for the Computation of Square Roots on IBM Electrical Accounting Equipment

Published online by Cambridge University Press:  01 January 2025

Wm. A. Reynolds
Wm. A. Reynolds*
Affiliation:
National Broadcasting Company
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Abstract

This paper presents a prepunched deck of cards to enable the extraction of square roots on standard punch card tabulating equipment. Such a deck is valuable in constructing mathematical tables which involve square roots or in obtaining standard deviations in connection with computing correlation coefficients. By using a deck of reciprocals in conjunction with the deck for square roots, correlations may be solved completely on IBM equipment.

Type
Original Paper
Information
Psychometrika , Volume 11 , Issue 4 , December 1946 , pp. 223 - 238
Copyright
Copyright © 1946 The Psychometric Society

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Footnotes

*

The author wishes to acknowledge the help given on machine procedures by Wallace M. Taylor, 1st Lt. A.C., Wright Field, Ohio.