| 单词 | arc elasticity |
| 释义 | arc elasticity The ratio of the proportional change in one variable to the proportional change in another, as actually measured between two points over a discrete range. Arc elasticity is distinguished from point elasticity, which is the limit taken by arc elasticity as the two points move closer together. Point elasticity cannot be directly observed, but must be found by statistical inference from actual observations, whereas arc elasticity is measured directly. |
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