Given Professor Singer's variance-covariance matrix: (a) Calculate the variance of an equally weighted portfolio. (b) Calculate the

Question:

Given Professor Singer's variance-covariance matrix:

(a) Calculate the variance of an equally weighted portfolio.
(b) Calculate the covariance of a portfolio that has 10% in asset 1,80% in asset 2, and 10% in asset 3 with a second portfolio that has 125% in asset 1, -10% in asset 2, and -15% in asset 3.

Portfolio
A portfolio is a grouping of financial assets such as stocks, bonds, commodities, currencies and cash equivalents, as well as their fund counterparts, including mutual, exchange-traded and closed funds. A portfolio can also consist of non-publicly...