A researcher selects a sample of 24 participants and has them complete a survey on dating preferences.In this example,what are the degrees of freedom for sample variance and what does this represent?
A) df = 24; it represents the number of scores that are free to vary in a sample.
B) df = 23; it represents the number of scores that are free to vary in a sample.
C) df = 23; dividing SS by df makes the sample variance a biased estimator of the population variance.
D) df = 24; dividing SS by df makes the sample variance an unbiased estimator of the population variance.

Question

Quizplus · Accepted Answer

Degrees of freedom for sample variance is calculated by subtracting 1 from the sample size. Therefore, in this example, the degrees of freedom for sample variance would be df = 23. This represents the number of scores that are free to vary in a sample, as one score is fixed based on the mean of the sample.

A Researcher Selects a Sample of 24 Participants and Has