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.
degrees of freedom (df)
a statistical measure of the number of independent observations or choices among members in a sample. It is used in determining the statistical significance of findings during data analysis.
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.
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.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.
degrees of freedom
used to define statistical distributions of several tests, usually based on the number of data items less the number of parameters estimated.