| 单词 | simple aggregative index | 
| 释义 | simple aggregative index [¦sim·pǝl ´ag·rǝ´gād·iv `in´deks]  STATISTICS A statistic computed for a collection of items by taking the ratio of the sum of their given-year values or amounts to the sum of their base-year values or amounts and usually multiplying by 100 to express the figure as a percentage.  | 
	
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