The phi coefficient is A)always less than 0. B)√(χ²/N). C)always greater than 1. D)always less than 1.

Question

Quizplus · Accepted Answer

The phi coefficient is a measure of association for two binary variables. It is calculated using a formula that involves the chi-square statistic (χ), the counts of the two categories (S1, U1), the product of the two categories (P12), the square of one of the categories (S1S1), the product of the marginal totals (P0), and the sample size (N). The formula given in option B, although not conventionally represented, suggests a calculation based on these elements, which is characteristic of the phi coefficient calculation. Options A, C, and D are incorrect as the phi coefficient can range from -1 to 1, depending on the strength and direction of the association.

The Phi Coefficient Is