A Researcher Selects a Sample of 24 Participants and Has

Multiple Choice

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.