18-20 thanks!

The variance of an investment's returns is a measure of the: volatility of the rates of return. probability of a negative return. historic return over long periods. average value of the investment. If two assets are perfectly positively correlated, then their returns will move up and down exactly in sync with one another. True False If two assets are held in a portfolio, the assets will generally be less risky than if they were held in isolation. True False