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Estimation of Other Coefficients of Correlation from the Phi Coefficient
Formulas are developed for estimating a point-biserial r or a tetrachoric r from an obtained phi coefficient. The estimate of a tetrachoric r , which is called r ϕ , is shown to be equivalent to that obtained from first-order use of the tetrachoric r series. A tabulation is made of corrections neede...
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Published in: | Psychometrika 1951-09, Vol.16 (3), p.335-346 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Formulas are developed for estimating a point-biserial r or a tetrachoric r from an obtained phi coefficient. The estimate of a tetrachoric r , which is called r ϕ , is shown to be equivalent to that obtained from first-order use of the tetrachoric r series. A tabulation is made of corrections needed to make r ϕ equivalent numerically to the tetrachoric r . In spite of its greater generality than estimates of tetrachoric r by previous methods, there are limitations, which are pointed out. |
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ISSN: | 0033-3123 1860-0980 |
DOI: | 10.1007/BF02310556 |