# degrees of freedom

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## de·grees of free·dom (d.f.),

in statistics, the number of independent comparisons that can be made between the members of a sample (for example, subjects, test items and scores, trials, conditions); in a contingency table it is one less than the number of row categories multiplied by one less than the number of column categories.
Farlex Partner Medical Dictionary © Farlex 2012

## de·grees of free·dom

(dĕ-grēz' frē'dŏm)
1. The number of planes (e.g., one, two, or three) within which a joint can move.
2. The variety of possible movement combinations that can occur within a segment of the human body.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

## degrees of freedom (df)

the number of unrestricted variables in a frequency distribution, a factor that is of great importance in statistical testing. For example, in a simple CHI-SQUARED TEST the number of degrees of freedom is one less than the number of classes (types) of individuals, one d.f. having been lost due to the assumption that a certain proportion of each class is expected. Thus in testing a 9:3:3:1 ratio there are three degrees of freedom.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

## de·grees of free·dom

(dĕ-grēz' frē'dŏm)
In statistics, number of independent comparisons that can be made between the members of a sample.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
This formulation ensures that the ratio [E.sub.loc] /[E.sub.rot] is truly a good measure of the relative amount of noise in the positional and rotational components of 6DOF data.
Vive Focus Plus offers two ultrasonic 6DoF controllers featuring an analog trigger that gives users the ability to control objects or interactions with pressure-sensitive input, making experiences truly immersive.
Vive Focus Plus offers two ultrasonic 6DoF controllers featuring an analogue trigger that gives users the ability to control objects or interactions with pressure-sensitive input, making experiences truly immersive.
The presentation on 6DoF technology in VR/AR will help the user to experience 3D audio/video content in the virtual space by introducing an unlimited number of listening and vantage points.
Commparison Between Different Methods of Control of Ball and Plate System with 6DOF Stewart Platform.
HTC also unveiled the Vive Cosmos, a brand new model that offers six degrees of freedom (6DOF) without the need for external sensors.
In addition, the company's patient-centric solutions include advanced patient immobilisation and positioning hardware and consumables, fiducial markers, couchtops and overlays, software, patient care products and advanced 6DOF robotic patient positioning.
FARO(R) (NASDAQ: FARO), a company involved in 3D measurement and imaging solutions for factory metrology, product design, construction BIM and public safety forensics, has launched the next generation of FARO Laser Trackers, the 6DoF Vantage product family with 6Probe.
According to HTC, Vive Focus is the first 6DOF stand-alone VR headset to be commercially available.
Different airplane models can be found on the local simulator database instead of tuning the aerodynamic coefficients of a six-degree-of-freedom (6DOF) model by hand.
The Teach and Playback training device prototype offers a robot arm that enjoys 6 degrees of freedom (6DoF).

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