Calculate the weighted average risk and return of your portfolio. The chart below shows the calculation for this part.

Stock	Covariances (%)	Rate of Return (%)
Cisco	10.24%	23.49%
Coca-Cola	25.24%	13.38
Walt Disney	26.05%	17.33%
Nike	9.14%	9.43%
Wal-Mart	29.80%	6.11%
Total	100.47%	69.74%
Average Weight	divided by 5	divided by 5
Total	20.09%	13.95%

Then, change the weights of the vehicles to emphasize high-return performers. I'm stuck on this part, can't seem to figure out how to go about it.