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  2. Normal - Wikipedia

    en.wikipedia.org/wiki/Normal

    Normal polytopes, in polyhedral geometry and computational commutative algebra; Normal ring, a reduced ring whose localizations at prime ideals are integrally closed domains; Normal scheme, a scheme whose local rings are normal domains; Normal sequence (disambiguation), either a normal function or a representation of a normal number

  3. Normal distribution - Wikipedia

    en.wikipedia.org/wiki/Normal_distribution

    The simplest case of a normal distribution is known as the standard normal distribution or unit normal distribution. This is a special case when μ = 0 {\textstyle \mu =0} and σ 2 = 1 {\textstyle \sigma ^{2}=1} , and it is described by this probability density function (or density): φ ( z ) = e − z 2 2 2 π . {\displaystyle \varphi (z ...

  4. Normal number - Wikipedia

    en.wikipedia.org/wiki/Normal_number

    The number x is called a normal number (or sometimes an absolutely normal number) if it is normal in base b for every integer b greater than 1. [ 7 ] [ 8 ] A given infinite sequence is either normal or not normal, whereas a real number, having a different base- b expansion for each integer b ≥ 2 , may be normal in one base but not in another ...

  5. Normal (geometry) - Wikipedia

    en.wikipedia.org/wiki/Normal_(geometry)

    In geometry, a normal is an object (e.g. a line, ray, or vector) that is perpendicular to a given object. For example, the normal line to a plane curve at a given point is the line perpendicular to the tangent line to the curve at the point. A normal vector of length one is called a unit normal vector.

  6. Multivariate normal distribution - Wikipedia

    en.wikipedia.org/wiki/Multivariate_normal...

    A real random vector = (, …,) is called a centered normal random vector if there exists a matrix such that has the same distribution as where is a standard normal random vector with components. [ 1 ] : p. 454

  7. Normal (chain store) - Wikipedia

    en.wikipedia.org/wiki/Normal_(chain_store)

    Normal is a Danish bargain-priced variety store chain primarily selling shelf-stable food and personal care products by national brands. It was founded by Torben Mouritsen and Bo Kristensen in 2013 with the first store in Silkeborg , Denmark . [ 1 ]

  8. Normality - Wikipedia

    en.wikipedia.org/wiki/Normality

    Complete normality or normal space, Log-normality, in probability theory; Normality (category theory) Normality (statistics) or normal distribution, in probability theory; Normality tests, used to determine if a data set is well-modeled by a normal distribution

  9. Normality test - Wikipedia

    en.wikipedia.org/wiki/Normality_test

    A graphical tool for assessing normality is the normal probability plot, a quantile-quantile plot (QQ plot) of the standardized data against the standard normal distribution. Here the correlation between the sample data and normal quantiles (a measure of the goodness of fit) measures how well the data are modeled by a normal distribution. For ...