5. Measuring standalone risk using realized data Returns earned over a given time period are called reallzed returns. Historical data on realized returns is often used to estimate future results. Analysts across companles use realized stock returns to estimate the risk of a stock. Consider the case of Blue Uama Mining Inc. (BLM): Aive years of realized returns for BUM are given in the following table. Remember: 1. While BLM was started 40 years ago, its common stock has been publicly traded for the past 25 years. 2. The returns on its equity are calculated as arithmetic returns. 3. The historical returns for BLM for 2012 to 2015 are: Given the preceding data, the average realized return on BuM's stock is The preceding data series represents of BLM's historical returns. Based on this conclusion, the standard deviation of BLM's hittorical returns is If investors expect the average realized return from 2012 to 2016 on BuM's stock to continuo into the future, its coefhclent of variation (CV) will be