? X Calculating returns and variability - Excel FORMULAS DATA REVIEW - 9 Sign In FILE HOME INSERT PAGE LAYOUT VIEW Calibri 111 A A = % H Paste B I U. . - A Cells Editing Alignment Number Conditional Format as Cell Formatting Table Styles Styles Clipboard Font H Returns 7% -13% 21% 34% 15% 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 Arithmetic average return Variance Standard Deviation