Data as given in the problem are shown below: Goodman Industries Year Stock Price Dividend 2020 $30.32 $2.23 2019 $23.53 $2.65 2018 $28.61 $2.73 2017 $15.21 $2.57 2016 $12.63 $2.23 2015 $13.21 $2.25 Landry Incorporated Stock Price $85.12 $79.32 $74.32 $87.12 $95.12 $84.25 Market Index Dividend Includes Divs. $3.52 18,475.97 $3.65 12,174.55 $3.45 12,019.97 $3.47 10,743.05 $3.55 9,455.42 $3.25 8,163.96 Calculate the standard deviation of the returns for Goodman, Landry, and the Market Index. (Hint: Use the sample standard deviation formula given in the chapter, which corresponds to the STDEV function in Excel.)