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ELASTICITY: The relative response of one variable to changes in another variable. The phrase "relative response" is best interpreted as the percentage change. For example, the price elasticity of demand, one of the more important applications of this concept in economics, is the percentage change in quantity demanded measured against the percentage change in price. Other notable economic elasticities are the price elasticity of supply, income elasticity of demand, and cross elasticity of demand.
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Lesson Contents
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Unit 1: The Method |
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Unit 2: Theory |
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Unit 3: Verification |
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Unit 4: Science and Practice |
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Unit 5: Cause and Effect | |
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Economic Science
In this lesson you'll see why and how the scientific method is a process of discovery. You'll see that it's a process of building theories to explain the workings of the world (the economy) by proposing then testing hypotheses. The five units making up this lesson will guide you through the basics of the scientific method and how it's used in the study of economics. - The first unit, The Method, introduces the scientific method, especially its' four key components -- theories, principles, hypothesis, and data.
- The second unit, Theory, then takes a closer look at theories, including the central role played by abstraction.
- In the third unit, Verification, we focus on the process of verification -- how and why hypothesized relationships about the workings of the economy are compared with actual data.
- We then turn out attention in the fourth unit, Science and Practice, to a simple example of how the scientific method is used to test a hypothesized relation between course grades and where students are seated in a classroom.
- The fifth and final unit in this lesson, Cause and Effect, examines the role that cause and effect plays in the scientific method and economic science.
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PERFECT COMPETITION, DEMAND The demand curve for the output produced by a perfectly competitive firm is perfectly elastic at the going market price. The firm can sell all of the output that it wants at this price because it is a relatively small part of the market. As a price taker, the firm has no ability to charge a higher price and no reason to charge a lower one. The market price facing a perfectly competitive firm is also average revenue and, most important, marginal revenue.
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YELLOW CHIPPEROON
[What's This?]
Today, you are likely to spend a great deal of time searching the newspaper want ads trying to buy either a rechargeable battery for your cell phone or a T-shirt commemorating the 2000 Olympics. Be on the lookout for door-to-door salesmen.
Your Complete Scope
This isn't me! What am I?
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Only 1% of the U.S. population paid income taxes when the income tax was established in 1914.
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"Those who are blessed with the most talent don't necessarily outperform everyone else. It's the people with follow-through who excel. " -- Mary Kay Ash, May Kay Cosmetics founder
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ERISA
Employee Retirement Income Security Act of 1974
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