RBSC
RBSC(the rank-biserial correlation) defines the correlation between a binomial variable b ∈ {0, 1} and a ranking variable r ∈ [rmin, rmax].
RBSC(the rank-biserial correlation) defines the correlation between a binomial variable b ∈ {0, 1} and a ranking variable r ∈ [rmin, rmax].