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ZERO SLOPE: A horizontal line in which the numerical value of the slope, calculated as the change in the variable on the vertical axis divided by a change in the variable on the horizontal axis, is zero. In other words, the Y-axis variable is fixed, or constant, for any and all values of the X-axis variable.

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ARC ELASTICITY

The average elasticity for discrete changes in two variables. The distinguishing characteristic of arc elasticity is that percentage changes are calculated based on the average of initial and ending values of each variable, rather than initial values. Arc elasticity is generally calculated using the midpoint elasticity formula. The contrast to arc elasticity is point elasticity. For infinitesimally small changes in two variables, arc elasticity is the same as point elasticity.

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ORANGE REBELOON
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Today, you are likely to spend a great deal of time watching the shopping channel trying to buy either a lighted magnifying glass or a small, foam rubber football. Be on the lookout for gnomes hiding in cypress trees.
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Two and a half gallons of oil are needed to produce one automobile tire.
"Always vote for principle, though you may vote alone, and you may cherish the sweetest reflection that your vote is never lost. "

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ARMA
Autoregressive Moving Average
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