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Reference.org
Generalized normal distribution
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<p>The generalized normal distribution (GND) or generalized Gaussian distribution (GGD) is either of two families of <a href="/facts/Parametric_statistics/Uvq9SJV9">parametric</a> <a href="/facts/Continuous_probability_distribution/EpsKKVRu">continuous probability distributions</a> on the <a href="/facts/Real_number/R02gw5Pb">real</a> line. Both families add a <a href="/facts/Shape_parameter/7jaG8RDp">shape parameter</a> to the <a href="/facts/Normal_distribution/UapjjPyQ">normal distribution</a>. To distinguish the two families, they are referred to below as "symmetric" and "asymmetric"; however, this is not a standard nomenclature. </p>