4.2.2006 Official Journal of the European Union L 32/15 COMMISSION REGULATION (EC) No 198/2006 of 3 February 2006 implementing Regulation (EC) No 1552/2005 of the European Parliament and the Council on statistics relating to vocational training in enterprises (Text with EEA relevance) THE COMMISSION OF THE EUROPEAN COMMUNITIES, Having regard to the Treaty establishing the European Community, Having regard to Regulation (EC) No 1552/2005 of the European Parliament and the Council of 7 September 2005 on statistics relating to vocational training in enterprises (1), and in particular Articles 7(3), 8(2), 9(4), 10(2), and 11(3) thereof, Whereas: (1) Regulation (EC) No 1552/2005 establishes a common framework for the production of Community statistics on vocational training in enterprises. (2 In order to implement Regulation (EC) No 1552/2005, measures concerning the sampling and precision requirements and sample size needed to meet these requirement, and the detailed NACE and size categories into which the results can be broken down, should be adopted. (3)  The Commission should define the specific data to be collected with respect to the training and non-training enterprises and to the different forms of vocational training. (4)  Implementing measures concerning the quality requirements for the data to be collected and transmitted for Community statistics on vocational training in enter- prises, the structure of the quality reports and any measures necessary for assessing or improving the quality of the data should be adopted. (5)  The first reference year for which the data are to be collected should be established. () OJ L 255, 30.9.2005, p. 1. (6)  Provisions should also be adopted concerning the appro- priate technical format and interchange standard of the electronically transmitted data. (7)  The measures provided for in this Regulation are in accordance with the opinion of the Statistical Programme Committee, HAS ADOPTED THIS REGULATION: Article 1 This Regulation lays down measures to implement Regulation (EC) No 1552/2005 on statistics relating to vocational training in enterprises. Article 2 The first reference year for which the data are to be collected shall be the calendar year 2005. Article 3 The specific variables to be transmitted to the Commission (Eurostat) shall be as specified in Annex L Article 4 Sampling and precision requirements, the sample sizes needed to meet these requirements, and the detailed specifications of the NACE and size categories into which the results can be broken down shall be as specified in Annex IL Article 5 Member States shall be responsible for data checking, error correction, imputation and weighting. Imputation and weighting of variables shall follow the principles laid down in Annex III. Derogation from these principles shall be fully justified and reported in the quality report.