A kind of distribution for a variable which is very ordinary is called Bell curve. The data based on the graph that used to describe a normal distribution is composed of a bell-shaped line where the name "bell curve" was derived. Another

The bell curve can be also called as a normal distribution. The bell curve is less mentioned as a Gaussian distribution, derived from Karl Gauss who is a physicist and German mathematician, who make the model in the scientific community well known by using it to examine and determine many data about astronomy.