Can someone help me with this please?

Stocks A and B have the following historical returns:

Year
2012	-19.80%	-13.40%
2013	32.75	23.00
2014	12.75	27.70
2015	-1.75	-12.30
2016	30.25	29.20

1. Calculate the average rate of return for each stock during the 5-year period. Round your answers to two decimal places.

   Stock A	%
   Stock B	%

2. Assume that someone held a portfolio consisting of 50% of Stock A and 50% of Stock B. What would have been the realized rate of return on the portfolio in each year? What would have been the average return on the portfolio during this period? Round your answers to two decimal places.

   Year	Portfolio
   2012	%
   2013	%
   2014	%
   2015	%
   2016	%
   Average return	%

3. Calculate the standard deviation of returns for each stock and for the portfolio. Round your answers to two decimal places.

   	rA	rB	Portfolio
   Std. Dev.	%	%	%

4. If you are a risk-averse investor then, assuming these are your only choices, would you prefer to hold Stock A, Stock B, or the portfolio? -Select-Stock AStock BPortfolioItem 12