中国大学MOOC:"When investors think of losing money, they are thinking about volatility.";

In the Black Scholes Model, which factor represents the volatility of the cash flow?

波动率（Volatility）是指资产历史收益率的标准差（）

中国大学MOOC: The higher the volatility of a stock’s price, the lower the prices of both puts and calls on that stock.

The higher the volatility of a stock’s price, the lower the prices of both puts and calls on that stock. A: 正确 B: 错误

中国大学MOOC: HAR异质自回归模型结合以实现波动率(realized volatility)建模，可以复制那些特征（ ）

The ________ of diversification in investment is to reduce volatility of returns, while _______ the potential for active monitoring. 投资多元化的_______是减少回报的波动性，而________积极监管的潜能。

From Black-Scholes Option Pricing Model, we know that the call price would increase but the put price would decrease as an increase in the volatility of prices of underlying stock. A: 正确 B: 错误

Which<br/>are the new challenges in digitalization?() A: Failure<br/>to process information B: Decreasing<br/>prices and costs for resources C: Volatility<br/>of prices and speed of business D: Emerging<br/>business networks

红酒变质的原因是什么？ A: 酒已经氧化了（Oxidation） B: 酒里面有硫化物（Sulphide）和硫醇（Mercaptans） C: 酒里面有挥发性酸（VolatileAcid/Volatility）