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Normal distribution


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Normal distribution

  1. 1. Normal distributionEach binomial distribution is defined by n, the number of trials and p, theprobability of success in any one trial.Each Poisson distribution is defined by its mean.In the same way, each Normal distribution is identified by two definingcharacteristics or parameters: its mean and standard deviation. The Normal distribution has three distinguishing features: • It is unimodal, in other words there is a single peak. • It is symmetrical, one side is the mirror image of the other. • It is asymptotic, that is, it tails off very gradually on each side but the line representing the distribution never quite meets the horizontal axis.