Plz fast... correlation
Q.2. Calculate Karl Pearson's coefficient of correlation, between the age and weight of children.
(Ans. r = + 0.98)
MEAN:
X = 15/5 = 3
Y = 30 / 5 = 6
Summation of (A-X)(B-Y) = 17
summation of (A - X)2 = 10
Summation of (B-X)2 = 30
r = Sum ( A-X(B-Y)
root of ( (A-X)2 (B - Y)2 )
r = 17
root of( 10 *30)
r = 17
root of ( 300)
r = 17
17.3
r = 0. 98