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For any question on data and metadata, please contact: Eurostat user support |
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1.1. Contact organisation | Eurostat, the statistical office of the European Union |
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1.2. Contact organisation unit | C4 Price Statistics, Purchasing Power Parities, Housing Statistics |
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1.5. Contact mail address | 2920 Luxembourg Luxembourg |
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2.1. Metadata last certified | 30/01/2020 | ||
2.2. Metadata last posted | 30/01/2020 | ||
2.3. Metadata last update | 30/01/2020 |
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3.1. Data description | |||
The Detailed Average Prices project provides average prices per country of up to 190 well defined consumer goods and services. |
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3.2. Classification system | |||
The products are classified according to the five-digit sub-classes of COICOP (Classification of individual consumption by purpose). The code consists of five numbers and one letter (and an additional number in some cases). The five numbers are the five-digit COICOP code and the letter is assigned discretionally to distinguish between products within the same five-digit code. The additional number is included in some products that may be upgraded in the future. |
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3.3. Coverage - sector | |||
DAP products covers partly the divisions of COICOP for the household sector (goods and services that are acquired by households). |
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3.4. Statistical concepts and definitions | |||
The DAP refers to an average of price offers for products purchased by the household sector. |
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3.5. Statistical unit | |||
Average prices per product are calculated for each of the participant countries. There are neither EU aggregates, nor regional breakdowns. |
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3.6. Statistical population | |||
The target statistical universe is price offers for a given set of products purchased by the household sector. The household sector to which the definition refers includes all individuals or groups of individuals irrespective of, in particular, the type of area in which they live, their position in the income distribution and their nationality or residence status. |
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3.7. Reference area | |||
The European Union Member States, Iceland, Norway, Switzerland, and Turkey. Not all countries release DAP or publish them in Eurobase. Neither EU/EA nor product aggregates are published. |
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3.8. Coverage - Time | |||
The 2015 data collection was the final exercise and the DAP project was discontinued. Average prices have been published in Eurobase since May 2014 and refer to data collection from years 2012 to 2015. Analysis were released from February 2009 (referring to 2008 data) to 2015. Those 'Consumer Prices Research' papers can be found under the HICP dedicated section / methodology / Detailed average prices. |
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3.9. Base period | |||
Not applicable. |
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The average prices are expressed in both euros and national currencies. The exchange rates are the average annual rate as published by Eurostat for the countries that provide price all through the year and the June average monthly rate for the countries that provide only June prices (see item 3.8). |
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The reference period is the calendar year, except for the countries that provide only June prices (see item 3.8). |
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6.1. Institutional Mandate - legal acts and other agreements | |||
None. |
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6.2. Institutional Mandate - data sharing | |||
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7.1. Confidentiality - policy | |||
Regulation (EC) No 223/2009 on European statistics (recital 24 and Article 20(4)) of 11 March 2009 (OJ L 87, p. 164), stipulates the need to establish common principles and guidelines ensuring the confidentiality of data used for the production of European statistics and the access to those confidential data with due account for technical developments and the requirements of users in a democratic society. |
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7.2. Confidentiality - data treatment | |||
According to policy rules (see item 7.1). |
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8.1. Release calendar | |||
Not applicable: the 2015 data collection was the final exercise and the DAP project was discontinued. |
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8.2. Release calendar access | |||
Not applicable. |
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8.3. Release policy - user access | |||
In line with the Community legal framework and the European Statistics Code of Practice Eurostat disseminates European statistics on Eurostat's website respecting professional independence and in an objective, professional and transparent manner in which all users are treated equitably. The detailed arrangements are governed by the Eurostat protocol on impartial access to Eurostat data for users. |
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Annually. The 2015 data collection was the final exercise. |
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10.1. Dissemination format - News release | |||
News releases on-line |
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10.2. Dissemination format - Publications | |||
Consumer Prices Research Report, available on-line. Statistics explained article, available on-line. |
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10.3. Dissemination format - online database | |||
Please consult free data on-line. |
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10.4. Dissemination format - microdata access | |||
Not applicable. |
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10.5. Dissemination format - other | |||
10.6. Documentation on methodology | |||
The Research Report explains briefly the methodology followed. |
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10.7. Quality management - documentation | |||
Please see the Consumer prices research (2015 prices). |
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11.1. Quality assurance | |||
All data provided by participating countries undergo a detailed multilateral validation process. For more information about Eurostat's quality assurance framework, please check: http://ec.europa.eu/eurostat/web/quality. |
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11.2. Quality management - assessment | |||
Not available. |
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12.1. Relevance - User Needs | |||
Detailed price statistics and detailed price level data are needed for several purposes, including for product market and sector monitoring with a view to the improved monitoring of Single Market policies, and the understanding of how markets work. Eurostat and the National Statistical Institutes are continuously investigating possibilities to extend the system of price statistics, and the project on Detailed Average Prices (DAP) aimed to supplement existing consumer price statistics by providing indicative average prices for specific consumer goods and services across Europe. |
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12.2. Relevance - User Satisfaction | |||
There are not specific surveys related to the Detailed Average Prices. It is posible to check the evaluations that assess Eurostat's performance in general: see 'user satisfaction surveys' at 'quality' / 'evaluation'/'general evaluaton results' in the website http://ec.europa.eu/eurostat/web/quality/general-evaluation-results. |
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12.3. Completeness | |||
The DAP project was discontinued since 2015 data collection. |
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13.1. Accuracy - overall | |||
In price statistics it is generally accepted that the Coefficient of Variation (CV) for the observations of a product should not be larger than 20%, otherwise it could mean that the product specification is too broad and the products surveyed are not of comparable quality. Currently only around 30 % of the average prices show a CV below 20 (per cent) while around 60 % of the average prices have a CV below 30. This indicates that efforts are needed to further narrow the product specifications, without reducing the coverage of the markets. |
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13.2. Sampling error | |||
Not available. |
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13.3. Non-sampling error | |||
In the DAP survey, measurement errors can occur due to non-compliance with the strict definition of the products in the product sample, for instance with regard to package sizes or quality parameters. |
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14.1. Timeliness | |||
The 2015 data collection was the final exercise and the DAP project was discontinued. |
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14.2. Punctuality | |||
Not applicable. |
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15.1. Comparability - geographical | |||
The comparability of the results is limited due to several factors that may influence price differences:
See item 18.4 for more details about why in some cases available data are not published. |
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15.2. Comparability - over time | |||
Price levels from the DAP survey cannot be compared over time to estimate inflation. Only the price indices of the HICP are to be considered the measures for European consumer inflation. The differences in prices from one year to another may come from various reasons other than price changes as measured by HICP-inflation:
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15.3. Coherence - cross domain | |||
The DAP survey is primarily based on price data collected for the purpose of the Harmonised Index of Consumer Prices (HICP), for a set of consumer products which are specified using a reduced version of the Purchasing Power Parity (PPP) standard product definitions. See item 18.1. |
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15.4. Coherence - internal | |||
Not applicable. |
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Not available. |
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17.1. Data revision - policy | |||
Data can be revised. |
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17.2. Data revision - practice | |||
Not available. |
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18.1. Source data | |||
Sampling and data collection are carried out by NSIs. The product sample is determined in collaboration among the participant countries and Eurostat. The data source is chosen by NSIs. Some NSIs use the existing HICP data set, other countries have developed a separate survey. |
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18.2. Frequency of data collection | |||
The DAP project was discontinued since 2015 data collection. |
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18.3. Data collection | |||
Within the general framework of each price survey, countries have a degree of freedom as to how to conduct the data collection. The most common way of obtaining data is by visiting outlets. However, questionnaires, phone calls, internet and scanner data are also used. |
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18.4. Data validation | |||
The validation of prices is initially performed by the NSIs and continued afterwards in a second interactive process by Eurostat and NSIs. While the validation process aims at eliminating these errors by carefully comparing the price material provided by each country and evaluating its plausibility, some of these errors can be hard to identify, especially those related to quality. Only about two fifths of the potential amount of prices is available. There are various reasons why NSIs could not provide these data or why available data are not published, such as:
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18.5. Data compilation | |||
In every Member State, the products have been selected following the procedures of its NSI. Additionally, the NSI is responsible of computing the average, using in many cases an unweighted arithmetic average of the price observations. In other countries regional or municipal price averages (arithmetic or geometric mean) are weighted using population figures or household consumption data as weights. There is data compilation from national currency to euro and from monthly averages to annual. |
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18.6. Adjustment | |||
No seasonal or quality adjustments are made. |
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The 2015 data collection was the final exercise and the DAP project was discontinued. Thus no further values will be published. |
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Product specifications and comments from the countries (2012) Product specifications, prices and comments from the countries (2013) Product specifications, prices and comments from the countries (2014) Product specifications, prices and comments from the countries (2015) |
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