Question

if the covariance between x and y equal to 0 then correlation coefficient is​

Answer 1

Answer:

r(X,Y)=

Var(X)⋅Var(Y)

cov(X,Y)

⇒0.6=

Var(X)⋅25

27

⇒

Var(X)

=

0.6×5

27

∴Var(X)=81