Commission Regulation (EC) No 198/2006Dangos y teitl llawn

[F1 2. ACCURACY U.K.

2.1. Sampling errors U.K.

This covers:

• Description of the sample design and of the effective sample.

• Description of the calculation of the final weighting factors including non-response model and auxiliary variables used, estimator used, e.g. Horvitz-Thompson estimator, variance of the estimates according to the sample strata, variance estimation software. In particular, a description of the auxiliary variables or information used should be reported in order to recalculate the final weighting factors at Eurostat since it is needed for variance estimation.

• In case of non-response analysis, a description of the biases in the sample and results.

Tables to be provided (broken down by NACE Rev. 2 and size classes according to the national sampling plan):

• Number of enterprises in the sampling frame.

• Number of enterprises in the gross sample and in the effective sample.

Tables to be provided for the observed effective sample (broken down by NACE Rev. 2 and size classes according to the national sampling plan):

• Coefficients of variation (1) for the following key statistics.

• Total number of persons employed, total number of enterprises that provided any form of CVT, ratio of the total number of enterprises that provided any form of CVT to the total number of enterprises.

• Total number of enterprises that provided CVT courses, ratio of the total number of enterprises that provided CVT courses to the total number of enterprises.

• Total number of persons employed in enterprises that provided any form of CVT, total number of participants in CVT courses, ratio of the total number of participants in CVT courses to the total number of persons employed, ratio of the total number of participants in CVT courses to the total number of persons employed in enterprises that provided CVT.

• Total costs of CVT courses.

• Total number of enterprises providing IVT, ratio of the total number of enterprises providing IVT to the total number of enterprises.

2.2. Non-sampling errors U.K.

2.2.1. Coverage errors U.K.

This covers:

• Description of the register used for sampling and its overall quality, information included in the register, and its updating frequency.

• Errors due to the discrepancies between the sampling frame and the target population and sub-populations (over-coverage, under-coverage, misclassifications).

• Methods used to obtain this information and notes on the processing of misclassifications.

Tables to be provided for the observed effective sample (broken down by NACE Rev. 2 and size classes according to the national sampling plan):

• Number of enterprises.

• Ratio of the number of enterprises for which the observed strata equals the sampling strata.

2.2.2. Measurement errors U.K.

Where appropriate an assessment of errors that occurred at the stage of data collection due to:

• The questionnaire design (results of pre-tests or laboratory methods; questioning strategies).

• Reporting unit/respondent considering the data collection mode used (e.g. problems and strategies to find the appropriate respondent(s) in the enterprise, memory problems, errors when filling the forms, assistance to the respondent). This includes a description and assessment of measures taken to ensure the high quality of the information related to ‘ participants ’ and to assure that ‘ participant events ’ were not collected.

• Existence/use of relevant information systems and administrative records in the enterprise, e.g. correspondence between the administrative and survey concept (reference period, availability of individual data).

• Methods used to reduce this kind of errors, problems with the questionnaire as a whole or with single questions.

2.2.3. Processing errors U.K.

This covers a description of the data editing process such as processing system and tools used, errors due to coding, editing, weighting or tabulation, quality checks at macro/micro level and corrections/failed edits.

2.2.4. Non-response errors U.K.

This covers an assessment of unit non-response and item non-response and a description of the measures undertaken regarding ‘ re-contacts ’ as well as:

• Report on imputation procedures including methods used for imputation and/or re-weighting.

• Methodological notes and results of non-response analysis or other methods to assess the effects of non-response.

Tables to be provided for the observed effective sample (broken down by NACE Rev. 2 and size classes according to the national sampling plan):

• Unit response rates (2) .

• Item response rates (3) for the following with respect to all respondents: total number of hours worked for all respondents and total labour cost for all respondents.

• Item response rates for the following with respect to enterprises offering CVT courses:

  • Total number of participants in CVT courses for enterprises offering CVT courses.

  • Total number of hours of all CVT courses for enterprises offering CVT courses, number of hours of internal CVT for enterprises offering CVT courses, number of hours of external CVT for enterprises offering CVT courses.

  • Total costs of CVT courses for enterprises offering CVT courses.]

Textual Amendments

F1 Substituted by Commission Regulation (EU) No 1153/2014 of 29 October 2014 amending Regulation (EC) No 198/2006 as regards the data to be collected, and the sampling, precision and quality requirements (Text with EEA relevance).

(1)

[F1 The coefficient of variation is the ratio of the square root of the variance of the estimator to the expected value. It is estimated by the ratio of the square root of the estimate of the sampling variance to the estimated value. The estimation of the sampling variance must take into account the sampling design and changes of strata.]

(2)

[F1 The unit response rate is the ratio of the number of in scope respondents to the number of questionnaires sent to the population selected.]

(3)

[F1 The item response rate for a variable is the ratio of the number of available data to the number of available and missing data (equal to the number of in scope respondents).]

Textual Amendments

F1 Substituted by Commission Regulation (EU) No 1153/2014 of 29 October 2014 amending Regulation (EC) No 198/2006 as regards the data to be collected, and the sampling, precision and quality requirements (Text with EEA relevance).