【单选题】Since delta of an option changes over the same time period that a stock price is changing, what is the delta used to calculate the approximate change in the option price?
A.
Delta at the start of the time period
B.
Delta at the end of the time period
C.
The average delta over the time period
D.
The median delta over the time period
【单选题】统计是与科学方法有关的一种技巧和一整套工具,它以的形式为决策者提供有关的事实依据()。
【判断题】可数个G_delta集之交和有限个G_delta集之并仍是G_delta集,但可数个G_delta集之并未必仍是G_delta集。()
【单选题】Should delta1 be equal to delta2?
A.
Yes. Delta1 should be equal to delta2.
B.
No. Delta1 should not be equal to delta2.
C.
No. Delta1 and delta2 are not dependent on each other.
【简答题】应用随机边界分析法进行税收收入能力估算属于数理统计估算方法,是一种间接估算方法,目前已有较为成熟的经济理论和应用技术。有关专家解说,这种估算方法的优点是能够细致地反映行业税收能力情况,缺点是消除了统计数据波动对估算结果的影响,估算结果比较平滑。通过你的学习。请你谈谈这种利弊总结正确与否?