Blomqvist medial rank-correlation coefficient (sign correlation around the medians; exact for exact input)
BlomqvistBeta[v1, v2]
BlomqvistBeta[m]
BlomqvistBeta[m1, m2]
BlomqvistBeta[dist]
BlomqvistBeta[dist, i, j]
BlomqvistBeta[{1.5, 3, 5, 10}, {2, 1.25, 15, 8}]
→ 1.BlomqvistBeta[N[{1, 3, 5, 6, 9}, 30], N[{2, -1, 3, 11, 4}, 30]]
→ 1.BlomqvistBeta[{-20, -21, 1, 7, 24, 36, -10, -12, 56, -14}, {3, -4, 1, 4, 22, 17, -2, 2, 13, -11}]
→ 3/5