The central limit theorem started as a bar trick for 18th-century gamblers. Now scientists rely on it every day.

Anyone familiar with basic statistics is familiar with the concept of a bell curve. A bell curve is a visual representation of normal data distribution, in which the median represents the highest ...

I can only recognize the occurrence of the normal curve … as a very abnormal phenomenon. — Karl Pearson (1901) Widely believed and rarely questioned is the notion that human characteristics, including ...

The normal distribution is pretty cool. It’s a mathematically determined probability distribution that does a good job of describing the patterns of variability between scores for many variables in ...

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Grading on a curve isn't just for college papers--many companies use numeric performance reviews and then fit employees to a bell curve. Unlike school, however, an employee's rating can determine ...