You have invested a portfolio comprised of Dell, Apple and Microsoft. Calculate the expected return and standard deviation of the portfolio given the information below. (SHOW IN EXCEL). Provide step by step solution.

1)Calculate the Expected return of the portfolio. (EXCEL)

2) The variance of the portfolio (EXCEL)

3) The standard deviation of the portfolio ( EXCEL)

Money spent Dell	$1680
Money spent Apple	$1805
Money spent Microsoft	$1584
Expected Return Dell	41%
expected return Apple	23%
expected return Microsoft	20%
standard deviation dell	14%
standard deviation apple	15%
standard deviation Microsoft	11%
correlation coefficient dell and apple	0.22
correlation coefficient dell and Microsoft	0.42
correlation coefficient Apple and Microsoft	0.25