# Correlation Coefficient.

#### harshalishah

##### New Member
1) If the correlation coefficient between two random variables X and Y is 0.5, then the correlation coefficient between 2X-4 and 3-2Y is?
a. 1
b. 0.5
c. -0.5
d. 0

1) If the correlation coefficient between two random variables X and Y is 0.3, then the correlation coefficient between (2X+3)/5 and (4Y+7)/11 is?
a. 0.3
b. 0.3/(11*5)
c. (2*4*0.3)/(11*5)
d. None of the above.