Which of the following is true about the computational formula for variance?
A) The computational formula will always produce the same solution as the definitional formula (give or take rounding errors).
B) It is a shortcut method for calculating variance when the population or sample size is large.
C) It is derived mathematically from the definitional formula.
D) All of these.

Question

Quizplus · Accepted Answer

The computational formula is derived mathematically from the definitional formula and it is a shortcut method for calculating variance when the population or sample size is large. Although there may be rounding errors, the computational formula will generally produce the same solution as the definitional formula. Therefore, all of the options are true.

Which of the Following Is True About the Computational Formula