A bell curve is a graph depicting the normal distribution, which has a shape reminiscent of a bell. The top of the curve shows the mean, mode, and median of the data collected.

The system also shows correlations between existing cognitive function tests, and we are pleased to announce that the results of this research were published twice in the international medical ...

Properties of a normal distribution include: the normal curve is symmetrical about the mean; the mean is at the middle and divides the area into halves; the total area under the curve is equal to ...