Suppose prices for a particular stock follow what is described as a random walk. Which of the following is true: I) price changes from one day to the next are independent of each other; II) price changes from one day to the next are positively related; III) price changes from one day to the next are negatively related; IV) the autocorrelation coefficient for successive price changes is either +1.0 or −1.0
Added by Angela F.
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A random walk implies that the future price of a stock is not influenced by its past prices. Each price change is determined by a random process. Show more…
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