A bell curve indicates that about 68% of the data lies within one standard deviation, about 95% of the data lies within two standard deviations, and about 99.7% of the data lies within three ...

For decades, teachers, managers and parents have assumed that the performance of students and employees fits what's known as the bell curve — in most activities, we expect a few people to be ...

Life isn't fair. Many of the most coveted spoils -- wealth, fame, links on the Web -- are concentrated among the few. If such a distribution doesn't sound like the familiar bell-shaped curve, you ...