Answer:
Portfolio´s beta: 1.16
Explanation:
Stock Percent Beta Weighted Beta
X 36% 1,19 0,43
Y 18% 0,87 0,16
Z 46% 1,26 0,58
1,16
The portfolio beta is obtained by the sum of the individual betas of each stock considering it´s percent on the portfolio (weighted beta).
It represents the relative volatility of a portfolio relative to the market. More than one means more volatile and less than one means less volatile than the market.