The weighted rank correlation coefficient rW2rW2 in the case of ties

A new weighted rank correlation coefficient rW2rW2 has been introduced in Pinto da Costa (2011), following the coefficient rWrW introduced in Pinto Da Costa and Soares (2005); Soares et al. (2001); Pinto Da Costa et al. (2001). We give the expression of rW2rW2 in the case of ties and also present some simulations to study the behaviour of the coefficient.