Which of the following statements about degrees of freedom is TRUE?
A)It always equals N - 2.
B)It is the number of scores in a sample that are free to vary.
C)It is used in effect size calculations.
D)It increases the bias inherent in a statistical estimate.

Question

Quizplus · Accepted Answer

Degrees of freedom refers to the number of scores in a sample that are free to vary. It is calculated as N - 1, where N is the sample size. Option A is incorrect because N - 2 refers to a specific formula for calculating t-scores in a dependent samples t-test. Option C is partially correct in that degrees of freedom are used in effect size calculations, but this is not their primary purpose. Option D is incorrect because degrees of freedom do not increase bias in statistical estimates.

Which of the Following Statements About Degrees of Freedom Is