iSixSigma

Degree of Freedom

Definition of Degree of Freedom:

Degrees of freedom are the equivalent of currency in statistics – you earn a degree of freedom for every data point you collect, and you spend a degree of freedom for each parameter you estimate. Since you ususally need to spend 1 just to calculate the mean, you then are left with n-1 (total data points “n” – 1 spent on calculating the mean).

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