题目内容
(请给出正确答案)
[主观题]
随机游走(random walk)
随机游走(random walk)
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第2题
关于随机漫步(random walk)论点,下列说法正确的是()。
A.股价变动不是随机的
B.股价变动可以预测
C.投资者一般只能得到正常收益率
D.股价并不会对新的信息做出反应
第4题
A "random walk" occurs when______.
A.stock price changes are random but predictable
B.stock prices respond slowly to both new and old information
C.future price changes are uncorrelated with past price changes
D.past information is useful in predicting future prices
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