degrees of freedom

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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.

degrees of freedom (df),

n.pl a statistic, based on the number of observations and groups in a study, that is necessary to determine statistical significance. One looks up the degrees of freedom and the significance level in a table of significance values to determine if the magnitude of the value obtained is significant. Used with the t-test, chi square, analysis of variance, and correlation.

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.

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