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 CARDINAL: A measurement based on a scale or quantitative numbers, such as 1, 5, or 357.2, that enables a comparison in magnitude. Comparability means, for example, that the difference between 5 and 2 is the same as the difference between 12 and 9. Measures such as height and weight use cardinal numbers. Most economic measures are based on cardinal numbers, including gross domestic product, unemployment rate, the price of chocolate, and the quantity of wheat produced. The benefit of cardinal measurement is the ability to directly compare one measure with another. If, for example, the price of chocolate is \$1 a pound and the price of wheat is \$4 a pound, then wheat is four times more expensive than chocolate. Ordinal measures, which involve relative ranking, is an alternative type of measure.
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 Lesson 12: Elasticity and Demand | Unit 5: Other Measures Page: 25 of 25

 Topic: Unit Review <=PAGE BACK | PAGE NEXT=>

In this unit, you should have learned about:
• The price elasticity of supply that complements the price elasticity of demand in market analysis.
• The income elasticity of demand, which is used to identify normal, inferior, and superior goods.
• The cross elasticity of demand, which is used to identify substitutes and complements.

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SHORT-RUN AGGREGATE SUPPLY AND MARKET SUPPLY

The short-run aggregate supply curve, or SRAS curve, has similarities to, but differences from, the standard market supply curve. Both are positively sloped. Both relate price and quantity. However, the market supply curve is positively sloped due to the law of diminishing marginal returns and the short-run aggregate supply curve is positively-sloped due to inflexible prices, the pool of natural unemployment, and imbalances in real resource prices.

 BEIGE MUNDORTLE[What's This?] Today, you are likely to spend a great deal of time lost in your local discount super center looking to buy either a wall poster commemorating the first day of winter or blue cotton balls. Be on the lookout for gnomes hiding in cypress trees.Your Complete Scope
 Cyrus McCormick not only invented the reaper for harvesting grain, he also invented the installment payment for selling his reaper.
 "I do not believe in a fate that will fall on us no matter what we do. I do believe in a fate that will fall on us if we do nothing. "-- Ronald Reagan, 40th US president
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