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The typically symmetrical curve of a normal distribution, resembling the profile of a bell. Also called bell-shaped curve, normal curve.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
a frequency distribution in statistics that resembles the outline of a bell when plotted on a graph. Also called bell-shaped curve.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
graph showing the distribution of a set of test scores where the average grade was a C
A symmetrical bell-shaped curve that represents the typical distribution and frequency of the values of a set of random data. It slopes downward from a point in the middle corresponding to the mean.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.