index number

American  

noun

Statistics.

1. a quantity whose variation over a period of time measures the change in some phenomenon.

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index number British  

noun

1. statistics a statistic indicating the relative change occurring in each successive period of time in the price, volume, or value of a commodity or in a general economic variable, such as the price level, national income, or gross output, with reference to a previous base period conventionally given the number 100

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Etymology

Origin of index number

First recorded in 1870–75

Example Sentences

Sterling found some support overnight after Britain's composite Purchasing Managers Index number managed to stay in growth territory, though it hasn't really pierced investors' gloom over British or Europe's outlook.

From Reuters • Aug. 24, 2022

Seattle’s BBQ Index number came out at a whopping 150.2, which means those four meats are will cost you 50.2% more here than the average cost for the 258 cities in the survey.

From Seattle Times • Sep. 6, 2021