How many degrees of freedom are in the following situations assuming that the nu

Question

How many degrees of freedom are in the following situations assuming that the number of data points in each case is 22? How many degrees of freedom are in the following situations assuming that the number of data points in each case is 22? How many degrees of freedom are in the following situations assuming that the number of data points in each case is 22? How many degrees of freedom are in the following situations assuming that the number of data points in each case is 22? You are asked to run a second order polynomial fit on the data.

Explanation / Answer

The degrees of freedom of an estimate of variance is equal to N - 1, where N is the number of observations. Therefore , here it willl be 22-1 = 21 degrees of freedom.

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