For 10 pair of distinct observations, if `d^2 = 33`, the value of rank correlation coefficient is
0.4
0.8
0.2
0.6

The coefficient of correlation when coefficients of regression are 0.2 and 1.8 is

The equations of the two lines of regression are 6x + y− 31 = 0 and 3x + 2y− 26=0 . Find the value of the correlation coefficient.

The value of sqrt(0.4) is (a) 0.02 (b) 0.2 (c) 0.51 (d) 0.63

Are the following statement correct? Given the reasons: (a) The regression coefficient of X and Y is 3.2 and that of y on x is 0.8. (b) The regression coefficient of X and Y is -2.5 and the correlation coefficient is 0.3.

The correlation coefficient between two variables X and Y is found to be 0.6. All the observations on X and Y are transformed using the transformations U=2-3X and V=4Y+1 . The correlation coefficient between the transformed variables U and V will be

If the regression co-efficients are 0.8 and 0.2, then the value of co-efficient of the correlation is

The square root of 0.4 is 0.6 (b) 0.7(c)0.8 (d) 0.9