Question

Find Karl Pearson's correlation coefficient from the following given values of X
and Y-
Х
78
89
96
69
59
79
68
61
Y
125
137
156
112
107
136
123 108​

Answer 1

r=(n(Σxy)−(Σx)(Σy)) /( √[nΣx²−(Σx)²][nΣy²−(Σy)²])

r=11852/ √9591*16080

r=0.95

Refer to the attachment for the working.

9b7bd0cd68643b62136d90bc632af639.xlsx