bell curve

bell curve

n. The typically symmetrical curve of a normal distribution, resembling the profile of a bell. Also called bell-shaped curve, normal curve.

bell′ curve`

n. a frequency distribution in statistics that resembles the outline of a bell when plotted on a graph. Also called bell-shaped curve.

bell curvegraph showing the distribution of a set of test scores where the average grade was a C

bell curve

A symmetrical bell-shaped curve that represents the typical distribution and frequency of the values of a set of random data. It slopes downward from a point in the middle corresponding to the mean.