NO.PZ2020021205000063
问题如下:
What does the Black-Scholes-Merton model assume about stock price movements?
选项:
解释:
The return over any very short period of length is normally distributed with mean and standard deviation where μ, is the expected return and u is the volatility. In theory, this is true only in the limit as tends to zero.
老师,麻烦讲解下这个题。这部分做题时的长期和短期总是不太会判断,不知道分别用那个公式。另外,short period 是指多久?