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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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                           INTERCEPT, INVESTMENT LINE: The intercept of the investment line indicates autonomous investment, investment that does not depend on the level of income or production. This can be thought of as investment that the business sector undertakes regardless of the state of the economy. Autonomous investment is affected by the investment expenditures determinants, which cause a change in the intercept and a shift of the investment line. Investment Line | 
| The investment line, also termed propensity-to-invest line or investment function, shows the relation between investment and income for the business sector. The income and production measures commonly used are national income and gross domestic product.A representative investment line is presented in the exhibit to the right. This red line, labeled I in the exhibit, is positively sloped, indicating that greater levels of income generate greater investment by the business sector. This positive relation indicates that the business sector is inclined to divert higher profits generated by an expanding economy to investment expenditures on capital goods. The investment line graphically illustrates the investment-income relation for the business sector, which is then added to the consumption line to derive the aggregate expenditures line used in Keynesian economics to identify equilibrium income and production. The intercept of the investment line indicates the intersection point between the investment line and the vertical investment axis. The investment line intersects the vertical axis at a value of $2 trillion. Theoretically, this is a minimum "baseline" level of investment, the amount of investment undertaken if income falls to zero. This intersection indicates autonomous investment--investment unrelated to income. Click the [Intercept] button to illustrate. Autonomous investment is investment by the business sector that is unrelated to and unaffected by the level of income or production. This is best indicated by a zero level of income. While individual businesses occasionally come face-to-face with autonomous investment, as their own slice of aggregate income drops to zero, for the aggregate economy autonomous investment is mostly an unlikely theoretical extrapolation. However, from an analytical perspective, the intercept of the investment line is affected by the investment expenditures determinants. These are ceteris paribus factors other than income that affect investment, but which are held constant when the investment line is constructed. Any change in these determinants cause the investment line to shift, which necessarily means a new intercept and a new level of autonomous investment.
 Recommended Citation:INTERCEPT, INVESTMENT LINE, AmosWEB Encyclonomic WEB*pedia, http://www.AmosWEB.com, AmosWEB LLC, 2000-2023. [Accessed: March 27, 2023]. Check Out These Related Terms... | | | | | | | | | | Or For A Little Background... | | | | | | | | | | And For Further Study... | | | | | | | | | | | | | | |
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GRAY SKITTERY [What's This?]
Today, you are likely to spend a great deal of time at a crowded estate auction seeking to buy either a set of steel-belted radial snow tires or a wall poster commemorating the 2000 Presidential election. Be on the lookout for gnomes hiding in cypress trees. Your Complete Scope
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The Dow Jones family of stock market price indexes began with a simple average of 11 stock prices in 1884.
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"One day at a time - this is enough. Do not look back and grieve over the past, for it is gone: and do not be troubled about the future, for it has not yet come. Live in the present, and make it so beautiful that it will be worth remembering." -- Ida Scott Taylor, Author
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AMEX American Stock Exchange
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