For example, a friend of mine was studying uptake of fluorescently labeled protein in rat kidneys. In theory, you choose these subgroups randomly from a larger set of possible subgroups.
The equation to determine the cost variance would be broken down as follows: CV = EV minus AC. The cost variance represents the algebraic difference between the earned value of a project (also known by the abbreviation of EV), and the actual cost of the project (also known by the abbreviation AC).
