Which of the following correctly describes the term "degrees of freedom"?
A) They are equal to the difference between the point estimate located at the interval centre and either the lower or the upper limit of the interval between which the parameter is free to move.
B) They determine the shape of the t distribution, and refer to the number of independent squared deviations inthat are available for estimatingand, in this sense, can be "freely chosen."
C) They equal sample size minus 2 in the case of a single sample.

Question

Quizplus · Accepted Answer

Degrees of freedom refer to the number of independent squared deviations available for estimating the population variance and standard deviation, and therefore determine the shape of the t distribution. They can be "freely chosen" in the sense that they are determined by the sample size minus 1. Option A describes the margin of error, and option C describes the degrees of freedom for a single-sample t-test, but not in general.

Which of the Following Correctly Describes the Term "Degrees of Freedom