### Formula or Equation

TR | Treynor ratio,reward-to-volatility ratio,Treynor measure,Jack L. Treynor ratio |

portfolio i's return(r)_{i} | return of portfolio,Rp,portfolio return,PR |

risk free rate of return (r)_{f} | risk free rate of return,RFROR,risk free ROR,RFRR |

portfolio i's beta (β)_{i} | beta,portfolio i's beta,PB |