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OPEC: The common abbreviation for the Organization of Petroleum Exporting Countries, which is an international organization of more than a dozen nations located primarily in the Middle East, Africa, and Central America that controls a sizeable portion of the world's petroleum reserves. This control over oil reserves gives OPEC significant market control, which it has been inclined to exert from time to time. The most noted time was the 1970s. OPEC raised oil prices from a scant $2 to $3 a barrel in the early 1970s to over $30 a barrel by the end of the decade. As an group of independent oil-producing nations seeking to monopolize the market, OPEC represents a textbook example of an cartel.

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Lesson 8: Market Shocks | Unit 2: Determinants Page: 4 of 20

Topic: Shifts <=PAGE BACK | PAGE NEXT=>

Shifts in the demand curve are originated by changes in the demand determinants and shifts in the supply curve by changes in the supply determinants.

Determinant changes cause shifts:

  • Increase in demand is a rightward shift.
  • Decrease in demand is a leftward shift.
  • Increase in supply is a rightward shift.
  • decrease in supply is a leftward shift.
Note that:
  • An increase in demand and an increase in supply both are rightward shifts.
  • A decrease in demand and a decrease in supply both are leftward shifts.

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AVERAGE REVENUE AND MARGINAL REVENUE

A mathematical connection between average revenue and marginal revenue stating that the change in the average revenue depends on a comparison between average revenue and marginal revenue. For perfect competition, with no market control, marginal revenue is equal to average revenue, and average revenue does not change. For monopoly and other firms with market control, marginal revenue is less than average revenue, and average revenue falls.

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Today, you are likely to spend a great deal of time going from convenience store to convenience store wanting to buy either a birthday greeting card for your grandmother or a coffee cup commemorating yesterday. Be on the lookout for defective microphones.
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Ragnar Frisch and Jan Tinbergen were the 1st Nobel Prize winners in Economics in 1969.
"When you play, play hard; when you work, don't play at all. "

-- Theodore Roosevelt, 26th US president

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