If 49% of the total variability of Y is accounted for by X, what is the value of r?

If 49% of the total variability of Y is accounted for by X, what is the value of r?

a.      0.49

b.     0.51

c.      0.70

d.     0.30

Satisfying the assumption of homoscedasticity allows you to _________.

a.        Interpret the standard error of estimate

b.        Calculate multiple R

c.        Calculate a standardized regression coefficient

d.        Decide who has been naughty or nice