null distribution

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• Null distribution — In statistical hypothesis testing, the null distribution is the probability distribution of the test statistic when the null hypothesis is true. In an F test, the null distribution is an F distribution. This statistics related article is a stub.… …   Wikipedia

• Null Device — Genres Electronic Years active 1995–present Website http://www.nulldevice.com Members …   Wikipedia

• Null httpd — is a tiny web server which is designed to be very small, simple, multithreaded, and available for Linux and Windows. Null httpd is free software / open source, and is distributed under the GNU General Public License (GPL).Null httpd is now part… …   Wikipedia

• Null hypothesis — For the periodical, see Null Hypothesis: The Journal of Unlikely Science. The practice of science involves formulating and testing hypotheses, assertions that are capable of being proven false using a test of observed data. The null hypothesis… …   Wikipedia

• Distribution (Mathematik) — Eine Distribution bezeichnet im Bereich der Mathematik eine besondere Art eines Funktionals, also ein Objekt aus der Funktionalanalysis. Die Theorie der Distributionen ermöglicht es, Ableitungen für Funktionen zu bestimmen, die im klassischen… …   Deutsch Wikipedia

• Noncentral chi-squared distribution — Noncentral chi squared Probability density function Cumulative distribution function parameters …   Wikipedia

• F-distribution — Probability distribution name =Fisher Snedecor type =density pdf cdf parameters =d 1>0, d 2>0 deg. of freedom support =x in [0, +infty)! pdf =frac{sqrt{frac{(d 1,x)^{d 1},,d 2^{d 2{(d 1,x+d 2)^{d 1+d 2{x,mathrm{B}!left(frac{d 1}{2},frac{d 2}{2}… …   Wikipedia

• Hotelling's T-square distribution — In statistics, Hotelling s T square statistic, [ H. Hotelling (1931) The generalization of Student s ratio , Ann. Math. Statist., Vol. 2, pp 360 ndash;378.] named for Harold Hotelling,is a generalization of Student s t statistic that is used in… …   Wikipedia

• Normal distribution — This article is about the univariate normal distribution. For normally distributed vectors, see Multivariate normal distribution. Probability density function The red line is the standard normal distribution Cumulative distribution function …   Wikipedia

• Student's t-distribution — Probability distribution name =Student s t type =density pdf cdf parameters = u > 0 degrees of freedom (real) support =x in ( infty; +infty)! pdf =frac{Gamma(frac{ u+1}{2})} {sqrt{ upi},Gamma(frac{ u}{2})} left(1+frac{x^2}{ u} ight)^{ (frac{… …   Wikipedia

• Multivariate normal distribution — MVN redirects here. For the airport with that IATA code, see Mount Vernon Airport. Probability density function Many samples from a multivariate (bivariate) Gaussian distribution centered at (1,3) with a standard deviation of 3 in roughly the… …   Wikipedia