Bell curve

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Bell curve definition

A bell curve, commonly known as the normal distribution, is a typical type of distribution for a parameter. The term “Bell Curve” sources from how the graph used to show a normal distribution is a symmetrical bell-shaped curve.

Bell curve distribution

The most likely event in a set of data (its mean, mode, and median in this case) is represented by the highest point on the curve, or the top of the bell, while all other possible occurrences are symmetrically dispersed around the mean, generating a downward-sloping curve on each side of the peak. The standard deviation describes the width of the bell curve.

standard deviation bell curve

A standard deviation is a metric for quantifying the variability of data dispersion in a set of values centered on the mean. The mean, on the other hand, is the average of all data points in the data set or sequence, and it can be located at the peak of the bell curve.

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