Helena Glaser-Opitzová, Petra Mazureková, Statistical Office of the Slovak Republic, Slovak Republic

Type of article: scientific article
Pages: 39 – 54

Abstract

In the process of modernizing and improving price statistics, the Statistical Office of the Slovak Republic is attempting to implement new data sources. One of the possible new sources is transaction data from retail chains, also known as scanner data. However, the use of such sources represents a significant methodological change. One of the fundamental changes is the shift in the price concept. Prices obtained in the traditional way, known as shelf prices, which are determined at a specific time, are replaced by average prices per unit of goods. The accuracy of the unit price is influenced by the period taken into account when determining it. The aim of this article is to determine whether and what impact the proposed partial time coverage of the observed period (2 weeks vs a month) has on the values of monthly price indices.