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Define a normal curve?

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Question added by BENARD AMWATA
Date Posted: 2017/02/21
Hosney Shoukrey
by Hosney Shoukrey , Lecturer of Mathematics , Faculty of Preparing Teachers at Zintan, Al-Jabal-Gharbi University

The normal curve is a symmetrical bell- shaped curve representing probability density function of a normal distribution. The area of a vertical section of the curve represents the probability that the random variable lies between the values which delimit the section. 

elonsy brahim
by elonsy brahim , teacher , cadi ayyad university

In probability theory, the normal (or Gaussian) distribution is a very common continuous probability distribution. Normal distributions are important in statistics and are often used in the natural and social sciences to represent real-valued random variables whose distributions are not known