Evaluation Glossary

Normal Distribution

A distribution represented as a bell shape, symmetrical on both sides of the peak, which is simultaneously the mean, median, and mode, and with both tails extending to infinity.


Dicker, R. C., Coronado, F., Koo, D., & Parrish, R. G. (2006). Principles of Epidemiology in Public Health Practice, 3rd Edition. Atlanta, GA: Department of Health and Human Services, Centers for Disease Control and Prevention, Office of Workforce and Career Development, Career Development Division.

Related Terms

Bell-Shaped Curve