Describe what happens to the expected value and standard deviation of the portfolio returns when the coefficient

Question:

Describe what happens to the expected value and standard deviation of the portfolio returns when the coefficient of correlation decreases.

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...