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distribution (dis″trĭ-bu´shәn)   the extent of a ramifying structure such as an artery or nerve and its branches.
  the geographical range of an organism or disease.
 

frequency distribution  in statistics, a mathematical function that describes the distribution of measurements on a scale for a specific population.

normal distribution  a symmetrical distribution of scores with the majority concentrated around the mean; for example, that representing a large number of independent random events. It is in the shape of a bell-shaped curve. Called also gaussian distribution.
Normal distribution. The approximate percentage of the area (or frequency) lying under the curve between standard deviations is indicated.

Normal distribution. The approximate percentage of the area (or frequency) lying under the curve between standard deviations is indicated.

probability distribution  a mathematical function that assigns to each measurable event in a sample group the probability that the event will occur.





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