please write out your work for number 10!

10. Use the following information to solve for both the average variance and standard deviation of returns for the market: Year Returns 1999 2000 2001 2002 2003 2004 27.52 -12.9 34.0 11.9 23.6 36.6 If I had $500,000 to invest, how would explain this risk-return relationship in a way that I would understand