An F statistic is broken up into a numerator and a denominator. Which variation applies to each?
1) Numerator represents the variation between groups and Denominator represents the variation within groups
2) Numerator represents the variation within groups and Denominator represents the variation between groups
3) Numerator represents the total variation and Denominator represents the variation within groups
4) Numerator represents the total variation and Denominator represents the variation between groups