two series X and Y with 50 items each have S D 4 5 and 3 5 respectively if - Economics - Correlation

Question

two series X and Y with 50 items each have S D 4 5 and 3 5
respectively if the sum of product of deviation of X and Y series
from their actual mean be 420 find the coefficient of correlation

Vaishali Nebhwani · Accepted Answer

Dear student,

N =50σx=4 5   σy = 3
5Σxy = 420r= ΣxyN·σx·σr =42050×4
5×3 5r = 420787 5 = 0 533

Regards

two series X and Y with 50 items each have S.D 4.5 and 3.5 respectively. if the sum of product of deviation of X and Y series from their actual mean be 420. find the coefficient of correlation.