Degrees of Freedom

Degrees of Freedom:
In statistics, the term degrees of freedom (df) is a measure of the number of independent pieces of information on which a parameter estimate is based. It is a measure of how much precision an estimate of variability has .

The degrees of freedom for an estimate equals the number of observations (values) minus the number of additional parameters estimated for that calculation . As we have to estimate more parameters, the degrees of freedom available decreases. It can also be thought of as the number of observations (values) which are freely available to vary given the additional parameters estimated.

It can be thought of two ways: in terms of sample size and in terms of dimensions and parameters.

The degrees of freedom (df for short) are the number of participants minus 1: equation N-1

The meaning of df ( degrees of freedom ) is to equal out the variance between the sample and the population, as the sample is clearly more variant as it is a sample (small amount) taken from the larger population . Thus the df tries to compensate for this indiscrepancy in variance when computing the total variance of a group by minusing 1 from the number of the sample. This example is taken from statistical analyses used in health sciences.

Spanish ~ Español - grados de libertad


No Comments till now !

The eBA News Portal
The eBA Basketball & Statistics Encyclopedia ~ You Are Here !
The eBA Basketball System Book
The eBA Basketball Statistics Forums
The eBA Basketball Statistics Blogs
The eBA Clinics ONLINE
The eBA Basketball Statistics Great Debate
The eBA Stats Group WITH YOU on Google PLUS
The eBA Stats Group WITH YOU on Facebook
The eBA Stats Group WITH YOU on Twitter
The eBA Stats Group Channel on YouTube

You must be logged in as Editor or Publisher Registered Member
to contribute to the Encyclopedia and to comment or correct an existing concept !

Browse by alphabet:




If you're using AdBlock Plus
If you're using AdBlock Plus or some other adblocking software, please know that You are free to do so and we shall not try to stop you.
If you're using AdBlock Plus

Just know that, although you are clearly not interested in clicking any of the advertisements on this website, ad-blocking prevents us from continuing to produce the content we do provide free of charge, and we politely request you to kindly whitelist our site thereby allowing our harmless and unobtrusive ads to load and the impressions counting to run !.

Thank YOU !
The eBA Team


Quick Edit a Wiki Page