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The normal, or Gaussian, distribution has a density function that is a symmetrical bell-shaped curve. It is one of the most important distributions in statistics. Use the [normality-assumption] tag for asking about testing for normality.

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Meaning of Bullets within Normal Distribution

I am working through the derivation for a method published in this paper. On page 586 (equation A1) the authors use the notation: $$ N(\bullet,\bullet) $$ What do the bullets represent? Do they imp …
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