F-test

An F-test is any statistical test in which the test statistic has an F-distribution under the null hypothesis. It is most often used when comparing statistical models that have been fitted to a data set, in order to identify the model that best fits the population from which the data were sampled. Exact "F-tests" mainly arise when the models have been fitted to the data using least squares. The name was coined by George W. Snedecor, in honour of Sir Ronald A. Fisher. Fisher initially developed the statistic as the variance ratio in the 1920s.

Common examples of F-tests

Common examples of the use of F-tests are, for example, the study of the following cases:

The hypothesis that the means of a given set of normally distributed populations, all having the same standard deviation, are equal. This is perhaps the best-known F-test, and plays an important role in the analysis of variance (ANOVA).

The hypothesis that a proposed regression model fits the data well. See Lack-of-fit sum of squares.

This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/F-test

Podcasts:

Email this Page Play all in Full Screen Show More Related Videos

Most Related
Most Recent
Most Popular
Top Rated

PLAYLIST TIME:

Alternative Video Results

Latest News for: f-test

Aberg embraces fresh Masters test after runner-up debut

The Daily Sentinel 09 Apr 2025

Ludvig Aberg stamped himself a rising star with a runner-up finish at the Masters last year, but the Swede said the good memories from his major championship debut will count for little when the tournament begins on Thursday ... .

Stuffy nose and steak knife join Scheffler's list of Masters tests

The Daily Sentinel 09 Apr 2025

Scottie Scheffler is well prepared for Augusta National's challenges as he chases a third Masters victory in four years, but a stuffy nose and steak knife could offer sterner tests ... .

New Bears coach Ben Johnson already testing QB Caleb Williams two days into offseason work

The Associated Press 09 Apr 2025

... program, Williams already was being put to the test in meetings by Johnson on details about the offense.

Primetals and partners test smelter technology in Linz

Kallanish Commodities 09 Apr 2025

Primetals has set the preconditions to fast-track the development of fluidised bed and smelter technologies with ....

All Tests Are Normal, I Am Perfectly Well Now: P Chidambaram

NDTV 09 Apr 2025

Congress leader P Chidambaram, who fainted due to heat at Sabarmati Ashram in Ahmedabad on Tuesday, informed that all his tests are normal and he is perfectly well now ... .

Because of technical difficulties with ACT test, Kearney High dismissed at 11 a.m. Tuesday

Kearney Hub 09 Apr 2025

Kearney High School will dismiss students at 11 a.m. today (April 8) due to technical difficulties with the ACT testing platform occurring across the nation ... .