von daniel » Mo 29. Sep 2014, 16:43
In general, the degrees of freedom of an estimate of a parameter is equal to the number of independent scores that go into the estimate minus the number of parameters used as intermediate steps in the estimation of the parameter itself (i.e., the sample variance has N-1 degrees of freedom, since it is computed from N random scores minus the only 1 parameter estimated as intermediate step, which is the sample mean).
Quelle:
http://en.wikipedia.org/wiki/Degrees_of ... statistics)
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