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.
This is in contrast to variable costs, which are volume-related (and are paid per quantity produced). In management accounting, fixed costs are defined as expenses that do not change as a function of the activity of a business, within the relevant period.For example, a retailer must pay rent and utility bills irrespective of sales.In marketing, it is necessary to know how costs divide between variable and fixed.his is in contrast to variable costs, which are volume-related (and are paid per quantity produced). In management accounting, fixed costs are defined as expenses that do not change as a function of the activity of a business, within the relevant period.