Inverted bell curve

In statistics, an inverted bell curve is a term used loosely or metaphorically to refer to a bimodal distribution 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.[1]

References

  1. ↑ E.g., see Gensheimer, Leah K.; Diebold, Charles T. (2014–2015), "Bimodal Inverted Bell Grade Distribution: Implications for Instruction and Student Retention", Journal of College Student Retention: Research, Theory and Practice, 16 (3): 307–324, doi:10.2190/CS.16.3.a.


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