phi coefficient การใช้

Otherwise, the phi coefficient cannot reach those minimal and maximal values.
The phi coefficient has a maximum value that is determined by the distribution of the two variables.
Other metrics include Youden's J statistic, the uncertainty coefficient, the Phi coefficient, and Cohen's kappa.
There is not any seperate Wikipedia article for Phi coefficient as far as I know, and the simple formula above is not quoted either.
Although computationally the Pearson correlation coefficient reduces to the phi coefficient in the 2? case, the interpretation of a Pearson correlation coefficient and phi coefficient must be taken cautiously.