Just want to double check if this is correct.Thanks in advance!

Returns earned over a given time period are called realized returns. Historical data on realized returns is often used to estimate future results. Analysts across companies use realized stock returns to estimate the risk of a stock. Five years of realized returns for Blue Llama Mining Inc. (Blue Llama) are given in the following table: 2012 2013 2014 2015 2016 Stock return 21.25% 14.45% 25.50% 35.70% 11.05% Also note that: 1. While Blue Llama was started 40 years ago, its common stock has been publicly traded for the past 25 years. 2. The returns on Blue Llama's equity are calculated as arithmetic returns. Given this return data, the average realized return on Blue Llama Mining Inc.'s stock is 43.18% a sample of Blue Llama's historical returns. Based on this conclusion, the standard deviation of Blue The preceding data series represents Llama's historical returns is 8.6783% If investors expect the average realized return on Blue Llama Mining Inc.'s stock from 2012 to 2016 to continue into the future, its expected coefficient of variation (CV) is expected to equal 0.4494