Consider two assets K and M where their returns are given in the following Table:

Probability	K	M
0.25	18%	-5%
0.25	12%	0
0.25	10%	15%
0.25	8%	20%

1. Calculate the mean and variance of each of these assets, and the covariance between them.
2. Calculate the mean and variance for the following portfolios:

	P1	P2
Proportion invested in K	75%	25%
Proportion invested in M	25%	75%

3. Find the portfolio that has the minimum variance and compute its mean and standard deviation.