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Normal Distribution

A Normal Distribution is:

Normal Distribution Plot

The plot below illustrates a normal distribution where each band has a width of 1 Standard Deviation:

Mean and Variance

Visually, you can see the function curve shift as the variance (standard deviation squared) and mean change:

Occurrence in Nature

Normal Distributions of randomly selected data points are common in nature. Examples include human:

  • Blood Pressure

  • Height

  • IQ

  • Weight

References