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Describe and define the three methods of descriptive research: case studies, naturalistic observations, and survey research. For each method, list at least one limitation and explain how the method could be used to study marriage.
Diminishing Marginal Product
The principle that as additional units of a variable input are added to a fixed input, the additional output produced from each new unit decreases.
Marginal Cost Curve
A graphical representation showing how the cost to produce one additional unit of a product changes as production volume increases.
Economies of Scale
The financial advantages achieved by companies through their operational size, with unit costs usually dropping as the scale of production increases.
Average-Fixed-Cost Curve
A graphical representation showing how the fixed cost per unit changes with changes in the volume of production.
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