Introductory Econometrics: A Modern Approach 6th Edition by Jeffrey M Wooldridge

Exercise 5

Suppose that the return from holding a particular firm’s stock goes from 15% in one year to 18% in the following year. The majority shareholder claims that “the stock return only increased by 3%,” while the chief executive officer claims that “the return on the firm’s stock has increased by 20%.” Reconcile their disagreement.