问题如下:
Continuing with the previous question, you have implemented the simulation process discussed earlier using a time interval △t= 0.001, and you are analyzing the following stock price path generated by your implementation.
Give this sample, which of the following simulation steps most likely contains an error?
选项:
A.Calculation to update the stock price
B.Generation of random sample value for ε
C.Calculation of the change in stock price during each period
D.None of the above
解释:
The random variable e should have a standard normal distribution, which means that it should have negative as well as positive values, which should average close to zero. This is not the case here. This is probably a uniform variable instead.
“C的意思是通过每期服从标准正态分布的ε乘以波动率求的每期△S,波动性这个条件在上一题给的条件里应该有,或者不看上一题,就看每期△S和ε比例都相等也可以推出每期△S计算式正确的。”----ε乘以波动率求每期ΔS,这是哪里的知识点?GSM的维纳过程不是ε乘以根号Δt吗?