phi coefficient
n. A linear measurement of the degree of relationship between two dichotomous and randomly distributed variables which equals the product-moment correlation if the variables are coded using 0 and 1 for the dichotomous values.
n. A linear measurement of the degree of relationship between two dichotomous and randomly distributed variables which equals the product-moment correlation if the variables are coded using 0 and 1 for the dichotomous values.
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