x 5. Calculating returns and variability - Excel ? - FILE HOME INSERT PAGE LAYOUT FORMULAS DATA REVIEW VIEW Sign In % Calibri 11 % A EB Paste BIU- 6-A Alignment Number Cells Editing Conditional Format as Cell Formatting Table Styles Styles Clipboard Font A1 fx A B D E F G H I J K 3 You've observed the following returns on Crash-n-Burn Computer's stock over the past five years. What is the arithmetic average return? The variance? The standard deviation? 4 5 6 Year 7 8 AWN- Returns 7% -13% 21% 34% 15% 9 10 11 12 13 14 Complete the following analysis. Do not hard code values in your calculations. Make sure to use the "sample" Excel formulas in your calculations. You must use the built-in Excel functions to answer this question. 15 16 Arithmetic average return 17 18 Variance 19 20 Standard Deviation