If the correlation coefficient between x and y is 0.6 , covariance is 27 and variance of y is 25 , then what is the variance of x ?

Step-by-step solution

Given, r=0.6 , covariance =27, _ ( y ) ^2=25 ( y )=5 We know, r = covariance ( x , y ) ( x ) ( y ) ( x )= covariance ( x , y ) r. ( y ) = 27 ( 6 10 ) 5 aligned & = 27 2 6 =9 & ^2(x)=81 aligned