True False ooo 1. Range of returns is not a measure of risk. 2. Weights are not related to a single asset's expected return. o o o o o o o o o 3. When computing a single asset's variance, the expected return is constant. 4. Correlation must be known in order to solve for covariance, 5. Covariances range from-1 to +1. 6. Covariance reveals neither the sign nor strength of a relationship. 7. In a large portfolio, the standard deviation is equal to the sum of the weighted covariances. 8. If the covariance between two assets equals zero, their correlation on must be zero. 9. If the correlation between two assets equals zero, the portfolio's standard deviation is a weighted average of the assets' standard deviations. o o