pivotal quantity

См. также в других словарях:

• Pivotal quantity — In statistics, a pivotal quantity is a function of observations whose distribution does not depend on unknown parameters.More formally, given an independent and identically distributed sample X = (X 1,X 2,ldots,X n) from a distribution with… …   Wikipedia

• Confidence interval — This article is about the confidence interval. For Confidence distribution, see Confidence Distribution. In statistics, a confidence interval (CI) is a particular kind of interval estimate of a population parameter and is used to indicate the… …   Wikipedia

• Фидуциальный вывод — (от лат. fides: вера, доверие), как разновидность статистического вывода, был впервые предложен сэром Р. Э. Фишером. Фидуциальный вывод может быть интерпретирован как попытка вычислить обратную вероятность без привлечения априорного… …   Википедия

• Bootstrapping (statistics) — In statistics, bootstrapping is a modern, computer intensive, general purpose approach to statistical inference, falling within a broader class of resampling methods.Bootstrapping is the practice of estimating properties of an estimator (such as… …   Wikipedia

• Normalization (statistics) — For other uses, see Standard score and Normalizing constant. In one usage in statistics, normalization is the process of isolating statistical error in repeated measured data. A normalization is sometimes based on a property. Quantile… …   Wikipedia

• Fiducial inference — was a form of statistical inference put forward by R A Fisher in an attempt to perform inverse probability without prior probability distributions.A fiducial interval may be used instead of a confidence interval or a Bayesian credible interval in …   Wikipedia

• Robust statistics — provides an alternative approach to classical statistical methods. The motivation is to produce estimators that are not unduly affected by small departures from model assumptions. Contents 1 Introduction 2 Examples of robust and non robust… …   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

• Exponential distribution — Not to be confused with the exponential families of probability distributions. Exponential Probability density function Cumulative distribution function para …   Wikipedia

• List of statistics topics — Please add any Wikipedia articles related to statistics that are not already on this list.The Related changes link in the margin of this page (below search) leads to a list of the most recent changes to the articles listed below. To see the most… …   Wikipedia

• Pivot — may refer to: * Pivot, the fulcrum as part of a lever * Pivot joint, a kind of joint between bones in the body * Pivot turn, a dance moveIn mathematics: * Pivot element, the first element distinct from zero in a matrix in echelon form * Pivotal… …   Wikipedia