怎么解释sharpe ratio？ interpret, earned, return, monthly, standard

eyiqiong

The mean monthly return on T-bills is 0.25%. The mean monthly return on the S& 500 is 1.30% with a standard deviation of 7.30%. Calculate the Sharpe ratio for the S& 500 and interpret the results.

Sharpe ratio = (1.30 - 0.25) / 7.30 = 0.144

The S& 500 earned 0.144% of excess return per unit of risk, where risk is measured by standard deviation. 请问这句话怎么解释sharpe ratio呢？