Which of the following values is NOT needed to compute sample variance using the computational formula,but is needed to compute the definitional formula?
A) sample mean
B) scores (x)
C) sample size
D) degrees of freedom

Question

Quizplus · Accepted Answer

The definitional formula for variance requires the sample mean to calculate the deviations from the mean, while the computational formula does not directly use the sample mean.

Which of the Following Values Is NOT Needed to Compute