The last four years of returns for a stock are as shown here: a. What is the average annual return? b. What is the variance of the stock's returns? c. What is the standard deviation of the stock's...

please help with parts a,b, and c

Extracted text: The last four years of returns for a stock are as shown here: a. What is the average annual return? b. What is the variance of the stock's returns? c. What is the standard deviation of the stock's returns? Note: Notice that the average return and standard deviation must be entered in percentage format. The variance must be entered in decimal format.


Extracted text: Data table (Click on the following icon e in order to copy its contents into a spreadsheet.) Year 1 2 3 4 Return - 4.2% + 28.1% + 11.8% + 3.6%