Calculate the standard deviation of the returns for Ark Industries.

market. They want to compare the stock performance with Apex Inc, a strong competitor in the industry, and the market index. The following data is available for managerial finance analysis.   Ark Industries   Apex Incorporated Market Index Year Capital gain/loss Dividend Purchased Price Capital gain/loss Dividend Purchased price Rate of Return 2020 $6.79 $2.23 […]