Definition: Laspeyres index

Category: Seasonal adjustment

In the Laspeyres index formula the price of a commodity at a given month is multiplied by the quantity at a base period. The value of the commodity basket at the current period, based on the quantities of the base period, is divided by the value of the commodity basket at the base period. http://ec.europa.eu/eurostat/ramon/statmanuals/files/UNECE_Seasonal_Adjustment_Demetra.pdf