normal distribution

- For a random variable, a
__probability__distribution which is__symmetrical__about the__mean__value, and which continuously diminishes in value until reaching zero at each__extreme__. It is utilized to determine the probability of the value of the variable falling within a given interval of values, and when graphed has the shape of a symmetrical bell. Various__phenomena__, such as some natural frequencies, have a normal distribution. Also called bell-shaped distribution, or Gaussian distribution.

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