The following facts are available:
\qquad r_m = 0.14
\qquad r_f = 0.0825
\qquad r = 0.18
Compute the beta coefficient (β).
\qquad r = r_f + \beta (r_m – r_f)
\quad 0.18 = 0.0825 + \beta \, (0.14 – 0.0825)
\quad 0.18 = 0.0825 + \beta \,(0.0575)
\>\> 0.0975 = \beta\, (0.0575)
\qquad \beta = 1.7