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CHANGE IN INVENTORIES: The increase or decrease in the stocks of final goods, intermediate goods, raw materials, and other inputs that businesses keep on hand to use in production the occur because aggregate expenditures are not equal to aggregate output. Inventory changes play a key role in the Keynesian economics and the analysis of macroeconomic equilibrium. When inventory changes are zero, then aggregate expenditures are equal to aggregate output and there is no reason for the business sector to change the rate of production. Hence this is equilibrium.
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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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Fact 7: Our Circular WorldOur little excursion through the economy has had, thus far, its ups and downs. My cable bill remains permanently confused and my checking account has a large property-tax created imbalance, but at least the pain in my tooth stops before hitting my toes. I think we deserve a little rest and relaxation at the Shady Valley's own tourist mecca, Happy-Time Gala-World Fun-Land Extravaganza Amusement Park. Let's take a brief respite from our pedestrian trek and give the soles of our jogging shoes a well-deserved rest. The Happy-Time Gala-World Fun-Land Extravaganza Amusement Park has the world famous Monster Loop Death Plunge roller coaster, guaranteed to make riders yearn for the pleasures of a Siberian forced labor camp. There's also the Enchanted Haunted Horror House filled with serial killers, chainsaw murders, and IRS auditors. For the more timid, and fortunately, for those more interested in the workings of our economy, the merry-go-round is the ride of choice. Two familiar faces are enjoying the circular trip on their fiberglass ponies. The slender guy with the bushy mustache is Dan Dreiling, the drywall man. I had him repair a hole in my living room wall caused by an over-excited vacuum cleaner a few months back. The disgusted look on his dusty face tells me that I must have overlooked his $100 bill. The other recognizable rider is Pollyanna Pumpernickel a precocious pet store owner who has somehow neglected to pay me the $100 due for hamster-sitting services which I rendered a few weeks ago. Her furtive glances suggest that she is well aware of her liability.
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YELLOW CHIPPEROON
[What's This?]
Today, you are likely to spend a great deal of time wandering around the shopping mall looking to buy either a travel case for you toothbrush or a looseleaf notebook binder. Be on the lookout for infected paper cuts.
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This isn't me! What am I?
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Francis Bacon (1561-1626), a champion of the scientific method, died when he caught a severe cold while attempting to preserve a chicken by filling it with snow.
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"Failure will never overtake me if my determination to succeed is strong enough." -- Og Mandino, Author and Speaker
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IADB
Inter-American Development Bank
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