fix: use averaged ranks for ties in Spearman, guard n<2#14888

SAnnasJawed wants to merge 1 commit into

TheAlgorithms:masterTheAlgorithms/Python:masterfrom

SAnnasJawed:fix/spearman-tied-ranks-and-zero-divisionSAnnasJawed/Python:fix/spearman-tied-ranks-and-zero-divisionCopy head branch name to clipboard