The Formula for Beta Is
A) $\beta _ { i }$

Multiple Choice

The formula for beta is

A) $\beta _ { i }$ = $\frac { \bar { R } i - R _ { f } } { ( \bar { R } M - R f ) }$
B) $\beta _ { i }$ =
$\frac{\rho_{R}, 1, R M}{2}$
$\sigma \mathcal{R} M$
C) $\beta _ { i }$ = $\frac { \operatorname { Cov } \left( \mathcal { R } _ { i } , \mathcal { R } M \right) } { \operatorname { Var } \left( \left( R _ { M } \right) \right. }$
D) $\beta _ { i }$ = $\frac { \operatorname { Corr } \left( \mathcal { R } _ { i } , \mathcal { R } M \right) } { \operatorname { Var } \left( \left( R _ { M } \right) \right. }$