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INCOME EARNED BUT NOT RECEIVED: Abbreviate IEBNR, this is the income earned by factors of production, but not received by members of the household sector. The three types of income earned but not received by the factors of production are Social Security taxes, corporate profits taxes, and undistributed corporate profits. In each case a factor of production has rightfully "earned" the income by contributing to valuable production contained in gross domestic product. However, because this income is not paid to the factor and it is not income received by the household sector. IEBNR is subtracted from national income to calculate personal income.

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MARGINAL COST

The change in total cost (or total variable cost) resulting from a change in the quantity of output produced by a firm in the short run. Marginal cost (MC) indicates how much total cost changes for a given change in the quantity of output. Because changes in total cost are matched by changes in total variable cost in the short run (total fixed cost is fixed), marginal cost is the change in either total cost or total variable cost. It is found by dividing the change in total cost (or total variable cost) by the change in output. Marginal cost is one of four cost concepts used in short-run production analysis. The other three are average total cost, average fixed cost, and average variable cost.

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MC
Marginal Cost
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