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# index number

noun, Statistics.
1.
a quantity whose variation over a period of time measures the change in some phenomenon.
Also called index.
Origin of index number
1870-1875
First recorded in 1870-75
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for index number
Historical Examples
• Each unit is given an index number, and all post offices in the unit have the same index number.

A. D. Smith
• Here in F of F—B there is an index number which evidently points to a note at the bottom of the next page.

Mary Wollstonecraft Shelley
• The basis of it should be the change in the index number of prices of all important commodities produced within the country.

Herbert Feis
• The profits return from the selected enterprises in all industries should be combined into an index number of profits.

Herbert Feis
• Suppose the index number of profits so calculated for a given period of time proves to be, for example, 18 per cent.

Herbert Feis
• A definite and simple criterion for the required adjustments is at hand—the now familiar "index number" of prices.

• If the correction is not enough, or if it is too much, the index number next month will tell the story.

• Suppose, for instance, that next month the index number is found to remain unchanged at 101.

• It also comes low on the rent table, having an index number little more than half that of Berlin.

• Prognathism, or projection of the jaws (index number of facial angle about 70, as compared with the Caucasian 82).

William Benjamin Smith
British Dictionary definitions for index number

## index number

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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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### Difficulty index for index number

Few English speakers likely know this word

### Word Value for index

13
14
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