If a the constant for a regression is 0.8 and the standard deviation for the x variables is 4 while the standard deviation for the y variables is 6. What is the correlation coefficient r?
a) 5.30
b) 0.53
c) 0.25
d) 0.33
a) 5.30
b) 0.53
c) 0.25
d) 0.33