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ARC ELASTICITY: The average elasticity for discrete changes in two variables, A and B. The distinguishing characteristic of arc elasticity is that percentage changes are calculated based on the average of the initial and ending values of each variable, rather than only initial values. Arc elasticity is generally calculated using the midpoint formula. Arc elasticity should be compared with point elasticity. For infinitesimally small changes in variables A and B, arc elasticity is the same as point elasticity.
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AUTONOMOUS GOVERNMENT PURCHASES Government purchases by the government sector that do not depend on income or production (especially national income or gross domestic product). That is, changes in income do not generate changes in government purchases. Autonomous government purchases are best thought of as government purchases that the government sector undertake independent of income. They are measured by the intercept term of the government purchases line. The alternative to autonomous government purchases is induced government purchases, which do depend on income.
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BLUE PLACIDOLA
[What's This?]
Today, you are likely to spend a great deal of time wandering around the downtown area hoping to buy either a pair of gray heavy duty boot socks or a 50-foot blue garden hose. Be on the lookout for fairy dust that tastes like salt.
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In the Middle Ages, pepper was used for bartering, and it was often more valuable and stable in value than gold.
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"In war, there is no second prize for the runner-up." -- Omar Bradley, US Army general
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NAV
Net Asset Value
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