normal distribution


Also found in: Thesaurus, Medical, Legal, Financial, Encyclopedia, Wikipedia.

normal distribution

n.
A theoretical frequency distribution for a random variable, characterized by a bell-shaped curve symmetrical about its mean. Also called Gaussian distribution.

normal distribution

n
(Statistics) statistics a continuous distribution of a random variable with its mean, median, and mode equal, the probability density function of which is given by (exp-[(x–μ)2/2σ2]/σ√(2π)) where μ is the mean and σ2 the variance. Also called: Gaussian distribution

nor′mal distribu′tion


n.
a theoretical frequency distribution represented by a normal curve. Also called Gaussian distribution.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.normal distribution - a theoretical distribution with finite mean and variance
distribution, statistical distribution - (statistics) an arrangement of values of a variable showing their observed or theoretical frequency of occurrence
statistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters
References in periodicals archive ?
The central flaw lies in believing that price movements in financial products follow a normal distribution around a central mean.
METHODS: We have presented the likelihood function for a bivariate normal distribution taking into account values < LOD as well as missing data assumed missing at random, and we use the estimated distributional parameters to impute values < LOD and to generate multiple plausible data sets for analysis by standard statistical methods.
The basic formula for VaR, assuming normal distribution of losses is presented below:
Each of the distributions listed in the first column, from which sample 1 was drawn, was paired with a normal distribution, from which sample 2 was drawn.
Key words: partial discharges, ignition voltage, normal distribution, oil-paper insulating system
Our industry has supported state-level legislation requiting enhanced wholesale distributor licensure requirements and chain of custody pedigrees for drug distributions outside the recognized and safe normal distribution channel.
The use of simple models that make use of the normal distribution is natural when governments are just starting to model risks, and there are cases in which it is defensible even if the government has the capacity to use more-complex models: governments are often more concerned about long-term changes than the short-term changes that preoccupy banks, and the distribution of long-term changes tends to be less fat-tailed than the distribution of short-term changes.
The normal distribution plays a highly important role in many fields of knowledge and activity of the Mankind.
Bhattacharya's method, distinguishing parameters with normal distribution from a combined distribution pattern (Sparre & Venema, 1992), can be used for splitting composite distributions of otolith weight and fish length distributions into separate normal distributions, applicable to cohorts.
Humans would most likely live in an average bubble" only if A) the distribution of bubbles under consideration resembles a normal distribution (such that near-average examples are more likely than far from average ones) and B) the sample of studied universes is randomly selected and large enough to be statistically representative.
This has an added value to the clients & profit for the business that you do not get in a normal distribution company.
i] is the independent variable, the parameters in the model can be represented as [phi], and the error term is assumed to follow the normal distribution N(0, [[sigma].