The systematic response coefficient for productivity, beta p. Would produce an unexpected change in any security return of (beta p.) If the expected rate of productivity was 15 percent and the actual rate was 2.25 percent. .75% -75% 2.25% 15% -2.25% The systematic response coefficient for productivity, beta p. Would produce an unexpected change in any security return of (beta p.) If the expected rate of productivity was 15 percent and the actual rate was 2.25 percent. .75% -75% 2.25% 15% -2.25%