Given the data above: What is the standard deviation of returns for stock A? What is the

Question:

Given the data above: What is the standard deviation of returns for stock A? What is the variance of returns for Stock B? What is the average return of stock C? What is the average return of that has 45% invested in stock A, 35% invested in stock B a and the rest invested in stock C?
Year. Return

Stock C Stock A Stock B 12% 15% 5% 14% 25% -6% 10% 3 8% 9% 16% 1% 25% 5% 3% 15% 2.

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...