| Normal Distribution | ||||||||||||
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The normal distribution, or Gaussian distribution, is a symmetrical distribution commonly referred to as the bell curve. It can be considered as a special case of the binomial distribution with a very large number of trials ( Suppose that the mean value and standard deviation of a normal distribution are
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) and an equal success/failure rate (
).
and 
, respectively. The normal distribution has the following important properties. 
| Uniform Distribution | ||||||||||||
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The uniform distribution has a constant success rate on the interval
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and zero success rate anywhere else. The uniform distribution has the following important properties. 
| Exponential Distribution | ||||||||||||
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The Exponential distribution arises in the calculations of reliability. It is similar to the Poisson distribution with
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where | ||||||||||||
and the probability of the desired outcome diminishes as the trial number increases (
). 
.
