In Simple Linear Regression, the Coefficient of Correlation R and the Least

Multiple Choice

In simple linear regression, the coefficient of correlation r and the least squares estimate $\hat { \beta } _ { 1 }$ of the population slope $\beta _ { 1 }$ :

A) Must be the same size and sign.
B) May have a different size and different sign.
C) May be the same size but have different sign.
D) May be different sizes but will have the same sign.