关于Markowitz assumptions中，returns distribution:investors look at each investment opportunity as a probability distribution of expected returns over a given investment horizon,应该怎么解释,最好能把这五项都解释一下
1,Returns distribution.
2,Utility maximaization
3,risk is variability
4,risk/return
5,risk aversion
谢谢啦,千万不吝赐教啊,还有很多术语真是怎么看都不明白,应该怎么办?
