An assay is an investigative (analytic) procedure in laboratory medicine, pharmacology, environmental biology and molecular biology for qualitatively assessing or quantitatively measuring the presence or amount or the functional activity of a target entity (the analyte). Qualitative assay, i.e. assays which generally give just a pass or fail, or positive or negative or some such sort of only small number of qualitative gradation rather than an exact quantity.
The average fixed cost (AFC) curve will decline as additional units are produced, and continue to decline. The average total cost (ATC) curve initially will decline as fixed costs are spread over a larger number of units, but will go up as marginal costs increase due to the law of diminishing returns.
As production changes, these fixed costs do not vary. The total cost is the sum of the variable and fixed cost, Total Cost Variable Cost Fixed Costï½ ï«. A simple model for the total cost is a linear model. where Q units are produced. The constant a is the cost per unit and b is the fixed costs. the fixed cost. Businesses often seek to succeed by lowering their costs. lowering the total cost function. units at all. Generally businesses seek to lower their average cost.