Économie et statistiques N° 97/2018 L'utilisation des données de caisse des supermarchés dans l'indice des prix à la consommation

Scanner data are files that contain, for each individual item, the value of sales and the number of units sold in an outlet during a certain period of time.
Instead of manually collecting prices in the outlets, several National Statistical Institutes started to use this new data source for the compilation of the Consumer Price Index. In Luxembourg, collaboration was put in place with several retailers who agreed to transmit every month their data to STATEC. This paper presents the methodological approach adopted by STATEC to use this new data source.