References
Chesire, L., Saffir, M., & Thurstone, L. L. Computing diagrams for the tetrachoric correlation coefficient. Chicago: Univ. Chicago Bookstore, 1933.
Michael, W. B., Perry, N. C., & Guilford, J. P. The estimation of a point biserial coefficient of correlation from a phi coefficient.Brit. J. Psychol., Statis. Sec., 1952,5, 139–150.
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The writer wishes to acknowledge the help and guidance of J. P. Guilford, who pointed out the need for such a chart and provided financial assistance for the drafting of the chart.
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Dingman, H.F. A computing chart for the point biserial correlation coefficient. Psychometrika 19, 257–259 (1954). https://doi.org/10.1007/BF02289190
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DOI: https://doi.org/10.1007/BF02289190