In medical research, cross-sectional studies differ from case-control studies in that they aim to provide data on the entire population under study, whereas case-control studies typically include only individuals with a specific characteristic, with a sample, often a tiny minority, of the rest of the population.
(redirected from Variable Expense) Also found in: Dictionary, Wikipedia. A cost that is directly proportional to the volume of output produced. When production is zero, the variable cost is equal to zero. A cost to a person or business that varies over time according to a number of factors.
Variable Cost. Definition: A variable cost is a cost that varies in relation to changes in the volume of activity. The variable cost concept can be used to model the future financial performance of a business, as well as to set minimum price points.The most common variable costs are:ariable Cost. Definition: A variable cost is a cost that varies in relation to changes in the volume of activity. The variable cost concept can be used to model the future financial performance of a business, as well as to set minimum price points. The most common variable costs are: