Degrees of freedom, statistical

Degrees of Freedom, statistical term for the number of choices that can be made when fixing values of expected frequency leading to the number of independent comparisons that can be made in a sample of observations. 

Chi-square x 1 exp(—-) /( )- k 2 0 C-) k 2k Distribution of a sum of squares of independent standard normal variables, k is referred to as degrees of freedom Statistical tests on assumed normal distribution. 

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See also in sourсe #XX -- [ ]

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