The coefficient of correlation between X and Y is 0.6. Their covariance is 4.8 var (x)=9. Find the value of `sigma_(y)`.

Calculate coefficient of correlation between series X and Y.

The co-efficient of correlation between two variables x and y is 0.5. Their co-variance is 15 and sigma_(x)=6 , Then sigma_(y)=

Coefficient of correlation between two variable X and Y is 0.32. Their covariance is 7.86. The variance of X is 10. Find the standard deviation of Y-series.

If the coefficient of correlation between x and y is 0.28, co-variance between x and y is 7.6 and the variance of x is 9, then the S.D. of y series is :

The coefficient of correlation between the values denoted by X and Y is 0.5 . The mean of X is 3 and that of Y is 5. Their standard deviations are 5 and 4 respectively. Find (i) the two lines of regression. (ii) the expected value of Y, when X is given 14 (iii) the expected value of when Y is given 9

The coefficient of correlation between X and Y is 0.6 U and V are two variables defined as U=(x-3)/(2), V=(y-2)/(3) , then the coefficient of correlation between U and V is