In general,the degrees of freedom (df )is the size of the sample (n) A) plus the number of parameters estimated in the sample B) minus the number of parameters estimated in the sample C) minus (x̄- X_i)² D) divided by the number of parameters estimated in the sample

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For the testing of means,df = n-1; the general form is that df is equal to the sample size minus the number of parameters estimated in the sample.

In General,the Degrees of Freedom (Df )Is the Size of the Sample