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Normal Bell Curve Distribution. It gets its name from the shape of the graph which resembles to a bell. Normal Distribution - Bell Curve Areas Probabilities PDF CDF How it All Works. It is created when a line is plotted using the data points for an item that meets the criteria of normal distribution. It is a Normal Distribution with mean 0 and standard deviation 1.
Sometimes it is also called a bell curve. A bell curve is a common type of distribution for one variable also known as a normal distribution. Normal Distribution also known as Gaussian Distribution named after the German mathematician Carl Gauss who first described it is a continuous probability distribution in which the occurrence of data is more clustered near the mean than the occurrence of data far from the mean. The width of the bell curve is known as standard deviation. The bulk of students will score the average C while smaller numbers of students will score a B or D. An even smaller percentage of students score an F or an A.
In probability theory and statistics the Normal Distribution also called the Gaussian Distribution is the most significant continuous probability distribution.
In the bell curve graph the top highest point represents most probable event and all other possible events are symmetrically distributed around the mean of the data. The meaning of the IQ bell curve. Between 0 and Z option 0 to Z. It shows you the percent of population. Bell curve is a curve in the shape of a bell in the graph sheet obtained as a result of the normal distribution also referred to as Gaussian distribution. This characteristic lends the normal distribution a bell curve.