Bell-shaped Distribution

distribution in statistics that resembles the outline of a bell when plotted on a graph.

Retrieved From:
http://www.thefreedictionary.com/bell-shaped+curve

Bell-shaped Distribution is a distribution in graph or plot that forms the shape of a bell or a bell like outline.

external image distribution_normal.jpg
Photo From:
http://medical-dictionary.thefreedictionary.com/Normal+distribution+curve

Another Example:


external image Histo.gif
symmetric (bell-shaped)
symmetric (bell-shaped)

http://faculty.elgin.edu/dkernler/statistics/ch03/images/symmetric.jpg
http://www.originlab.com/www/resources/graph_gallery/images_galleries/Histo.gif

"If the shape of distribution is symmetric,we can also assume that mean is equal to median." [jeffril]