Question: Stock investors often look to beat the performance of the S&P 500 Index, which generally serves as a yardstick for the market as a whole. The following table shows a comparison of the five-year cumulative total shareholder returns for IDACORP common stock, the S&P 500 Index, and the Edison Electric Institute (EEI) Electric Utilities Index. The data assume that $100 was invested on December 31, 2002, with beginning-of-period weighting of the peer group indices (based on market capitalization) and monthly compounding of returns
![100_41.png](https://secure.tutorsglobe.com/CMSImages/100_41.png)
Using the information provided, construct appropriate statistical measures that illustrate the performance of the three investments. How well has IDACORP performed over the time periods compared to the S&P 500? How well has it performed relative to its industry as measured by the returns of the EEI Electric Utilities Index?