单选题
When a risk-free asset is combined with a portfolio of risky assets, will the Standard deviation of the resulting portfolio Graph of the possible portfolio return and risk combinations be a linear funtion of the standard deviation display increasing incremental return per unit of the risky asset portfolio? of incremental resk change? ①A. YES NO ②B. YES YES ③C. NO YES
【正确答案】
A
【答案解析】
The variance of a portfolio consisting of a risky asset and a risky portfolio is:
Because the variance of the risk-free asset is zero,
The variance of a portfolio consisting of a risky asset and a risky portfolio is:
Because the variance of the risk-free asset is zero,