The Fractionator Principle. The fractionator principle is one of the important concepts used in stereology. The importance of this principle cannot be overlooked. It appears in many different places. Although it looks different depending on how it is used, the principle is the same.
In mathematics, a variable whose value is determined by the value of an independent variable. For example, in the formula for the area of a circle, A = Ïr2, A is the dependent variable, as its value depends on the value of the radius (r). Compare independent variable.
French Equivalent: Variable. Definition: A variable is a characteristic of a unit being observed that may assume more than one of a set of values to which a numerical measure or a category from a classification can be assigned (e.g. income, age, weight, etc., and occupation, industry, disease, etc. Context: