def rank(xdata, ties="average"): return listrank.rank(xdata, ties)
def SpearmanRankCorrelation(xdata, ydata, ties="average"): """Computes the nonparametric Spearman rank correlation between two data sets.""" xranks = listrank.rank(xdata, ties=ties) yranks = listrank.rank(ydata, ties=ties) return PearsonCorrelation(xranks, yranks)