|RET DEV||=||Actual returns deviation over selected period|
|N||=||Number of points for the period|
Variance ComparisonVariance is also a measure of stock volatility and can help determine the risk an investor might take on when purchasing a specific security. A relatively big variance indicates that the daily prices or returns are far from the mean and a small variance indicates that they are located around the mean.
|Compare Alcoa to competition|