ALL meanings of index number
in·dex num·ber
I i - noun index number a quantity whose variation over a period of time measures the change in some phenomenon. 1
- noun index number 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 0