Somewhere back in your middle school and high school math classes, you no doubt learned about the mean and standard deviation as fairly fundamental concepts in arithmetic and statistics. You also knew ...

When you're trying to estimate the time between the beginning and the end of any project, the critical path follows the longest route. The standard deviation, on the other hand, uses the the most ...

This is a preview. Log in through your library . Abstract Several simple estimates of the mean and standard deviation of a normal population are discussed. The efficiencies of these estimates are ...