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A: The common notation for the "intercept" term of an equation specified as Y = a + bX. Mathematically, the a-intercept term indicates the value of the Y variable when the value of the X variable is equal to zero. Theoretically, the a-intercept is frequently used to indicate exogenous or independent influences on the Y variable, that is, influences that are independent of the X variable. For example, if Y represents consumption and X represents national income, a measures autonomous consumption expenditures.

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Lesson 7: Market Equilibrium | Unit 2: The Numbers Page: 7 of 22

Topic: Market Agreement <=PAGE BACK | PAGE NEXT=>

What would happen if we had different prices in the market?
  • At 10 cents, the quantity demanded is 800 tapes and the quantity supplied is 0 tapes. This is not a suitable price. The buyers can't buy all that they want.
  • At 90 cents, the quantity demanded is 0 tapes and the quantity supplied is 800 tapes. This is not a suitable price, either. The sellers can't sell all that they want.
  • Buyers or sellers are not satisfied at these prices and will take corrective action.
This is not equilibrium.

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EIGHT-FIRM CONCENTRATION RATIO

The proportion of total output in an industry produced by the eight largest firms in an industry. This is one of two common concentration ratios. The other is the eight-firm concentration ratio. Another related measure is the Herfindahl index. The eight-firm concentration ratio is commonly used to indicate the degree to which an industry is oligopolistic and the extent of market control held by the eight largest firms in the industry.

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Today, you are likely to spend a great deal of time watching infomercials hoping to buy either blue cotton balls or a genuine down-filled pillow. Be on the lookout for rusty deck screws.
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Three-forths of the gold mined each year is used to manufacture jewelry.
"Plans are only good intentions unless they immediately degenerate into hard work."

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