Normal Distribution

Normal Statistical Distribution


General Characteristics

  • It is Bell-shaped or forms a Mound curve.
  • The curve is Symmetrical with respect to the Mean.
  • The total area under the curve is equal to 1.



Specific Characteristics

Key Measures:

Mean, Standard Deviation (SD)


Range of values:

-∞ < x < ∞



Mean = mean


Standard Deviation, SD:

SD = sd



Normal Distribution can be used in finding errors in dimensions of components.

Normal Statistical Distribution – Statistical Distributions
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