In statistics, an inverted bell curve is a term used loosely or metaphorically to refer to a
bimodal distribution
In statistics, a multimodal distribution is a probability distribution with more than one mode. These appear as distinct peaks (local maxima) in the probability density function, as shown in Figures 1 and 2. Categorical, continuous, and dis ...
that falls to a trough between two peaks, rather than (as in a standard
bell curve) rising to a single peak and then falling off on both sides.
[E.g., see .]
References
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Continuous distributions
Gaussian function