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what is the normal curve and why do we it "normal" what kind of phenomena might...

what is the normal curve and why do we it "normal"
what kind of phenomena might we expect to conform to a normal probability distribution?

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Normal Distribution: A normal distribution is bell shaped density curve described by it's mean and variance . It curve symmetrical, centered about mean with its dispersion determine by its standard deviation .

It is also known as the Gaussian distribution and the bell curve.

The normal distribution is the most important probability distribution in statistics because it fits many natural phenomena. For example, heights, blood pressure and IQ scores follow the normal distribution.

Characteristics of Normal Distribution

Normal distributions are symmetric, unimodal, and asymptotic, and the mean, median, and mode are all equal.

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