index number
noun Statistics.
a quantity whose variation over a period of time measures the change in some phenomenon.
Also called
index.
Origin of index number
First recorded in 1870–75
Words nearby index number
British Dictionary definitions for index number
index number
noun
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