from numpy import corrcoef

data = [
(0, 53),
(0, 64),
(10, 90),
(20, 78),
(20, 85),
(30, 27),
(30, 46),
(30, 53),
(40, 40),
(40, 52),
(40, 60),
(40, 67),
(40, 71),
(50, 75),
(50, 77),
(60, 40),
(60, 64),
(60, 82),
(60, 90),
(60, 93),
(60, 96),
(80, 53),
(80, 86), # ayy intel
(90, 80),
(90, 83),
(90, 87),
(90, 93),
(90, 95),
(100, 62),
(100, 78),
(100, 95)
]

attendance, marks = zip(*data)

print(corrcoef(attendance, marks))