use excel it solve

7. Two investments generated the following annual returns: Year Investment X Investment Y 2010 10% 14% 2011 20% 20% 2012 30% 15% 2013 20% 20% 2014 10% 21% 2015 19% 22% 2016 17% 15% 2017 16% 14% 2018 20% 21% 2019 18% 18% (a) (10 points) What is the average annual return on each investment? (b) (10 points) What is the standard deviation of the return on investments X and Y? (c) (10 points) Based on the standard deviation, which investment is riskier