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HORIZONTAL ADDITION: In graphical analysis, the technique of combining two curves by adding the value of the variable on the horizontal or X axis for a given value of the variable on the vertical or Y axis. This is commonly done when deriving a market demand curve from a set of individual demand curves. The quantity demanded by every individual is added at a given price to identify the total market demand at that price.
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Lesson 2: Economic Science | Unit 3: Verification
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Page: 9 of 20
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Topic:
Overview and Data
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An hypothesis is a possible, even probable, scientific relationship. An hypotheses is a candidate to become a principle. Hypothesis must be tested before becoming principles.- A possible hypothesis: The distance between a passing car and a jogger depends on the driver's political philosophy.
- Alternative hypotheses can also explain differences in distance between jogger and passing car.
An hypothesis that seems reasonable is not necessarily right. It must be verified with real world data.- The scientific method does not accept an explanation at face value. It needs to prove an explanation is correct.
- Scientists check to see if a reasonable explanation is consistent with the data. The scientific process is all about verifying hypotheses.
- To test our hypothesis, ask people about passing distance and political affiliation.
- While subjective data, based on asking people, can be useful, objective methods of data collection are usually preferred. Let's use lasers.
- Government is a fruitful source of objective data.
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RECOVERY The early phase of a business-cycle expansion that occurs shortly after a contraction has ended. During a recovery, the unemployment rate remains relatively high, but is beginning to fall, and real gross domestic product begins to increase, usually rapidly. However, because the contraction remains fresh in the minds of many, it may not be immediately clear that the trough of the contraction has actually ended.
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time flipping through the yellow pages trying to buy either a velvet painting of Elvis Presley or a wall poster commemorating yesterday. Be on the lookout for vindictive digital clocks with revenge on their minds.
Your Complete Scope
This isn't me! What am I?
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Woodrow Wilson's portrait adorned the $100,000 bill that was removed from circulation in 1929. Woodrow Wilson was removed from circulation in 1924.
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"The past is a foreign country; they do things differently there." -- Leslie Poles Hartley, Writer
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ATM
Automated Teller Machine
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