8006 無料問題集「PRMIA Exam I: Finance Theory Financial Instruments Financial Markets - 2015 Edition」
Which of the following statements are true?
I. The square-root-of-time rule for scaling volatility over time assumes returns on different days are independent II. If daily returns are positively correlated, realized volatility will be less than that calculated using the square-root-of time rule III. If daily returns are negatively correlated, realized volatility will be less than that calculated using the square-root-of-time rule IV. If stock prices are said to follow a random walk, it means daily returns are independent of each other and have an expected value of zero
I. The square-root-of-time rule for scaling volatility over time assumes returns on different days are independent II. If daily returns are positively correlated, realized volatility will be less than that calculated using the square-root-of time rule III. If daily returns are negatively correlated, realized volatility will be less than that calculated using the square-root-of-time rule IV. If stock prices are said to follow a random walk, it means daily returns are independent of each other and have an expected value of zero
正解:D
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