访问日期： 30 十一月, 2018
Description of statisticsConcepts and definitions
An [index] is a ratio describing the relative change in a variable (e.g. price, volume or value) compared to a certain base period [e.g. one year]. The[ index] point figure for each point in time tells what percentage the given examined variable is of its respective value or volume at the base point in time. The mean of the[ index] point figures for the base period is 100.
[Point figure] is a change quantity used in price indices, which expresses the price, average price or index of the reference period relative to the price, average price or index of the base period. The[ point figure ] of the base period is usually denoted by the number hundred. For example, if the[ point figure] of the commodity is 105.3 in a certain period, it means that the price of the commodity has risen by 5.3 per cent from the base period.