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Sampling in Business Surveys Basic principles Using Business Register (BR) as a frame

Reg ional Seminar on Developing a Program for the Implementation of the 2008 SNA and Supporting Statistics Cenker Burak METİN 11-13 September 2013 Ankara – Turkey.

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Sampling in Business Surveys Basic principles Using Business Register (BR) as a frame

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  1. Regional Seminar on Developing a Program for the Implementation of the 2008 SNA and Supporting StatisticsCenker Burak METİN 11-13 September2013 Ankara – Turkey

  2. Regional Seminar on Developing A Program for the Implementationof the2008 SNA and Supporting Statistics11-13 September 2013 / Ankara - Turkey Sampling in Business Surveys • Basic principles • Using Business Register (BR) as a frame • Probability sampling for selection • Stratifying by NACE and NUTS Classifications • Pursuing Eurostat Regulations • Representativity • Coordination sampling • Reducing response burden

  3. Regional Seminar on Developing A Program for the Implementationof the2008 SNA and Supporting Statistics11-13 September 2013 / Ankara - Turkey Sampling in Business Surveys • Sampling methodologies implemented in Business Surveys • Structural Business Survey • Short Term Business Survey (quarterly) • The Community Innovation Survey • ICT usage and e-Commerce in enterprises • Continuing Vocational Training Survey • Earning Structure Survey • Labour Cost Survey • Supply and Use Survey • Business Tendency Survey (monthly)

  4. Regional Seminar on Developing A Program for the Implementationof the2008 SNA and Supporting Statistics11-13 September 2013 / Ankara - Turkey Structural Business Survey • Classifications • NUTS • NACE Rev. 2 ( NACE Rev 1.1 before 2010, both of two for 2010) • Geoghrapical Coverage • Turkey • Coverage • All enterprises and their local units covered by sectoral coverage.

  5. Regional Seminar on Developing A Program for the Implementationof the2008 SNA and Supporting Statistics in Turkey 11-13 September 2013 / Ankara - Turkey • Structural Business Survey • Sectoral Coverage • B Mining and quarrying • C Manufacturing • D Electricity, gas, steam and air conditioning supply • E Water supply; sewerage, waste management and remediation activities • F Construction • G Wholesale and retail trade; repair of motor vehicles and motorcycles • H Transportation and storage • I Accommodation and food service activities  • J Information and communication • L Real estate activities • M Professional, scientific and technical activities • N Administrative and support service activities  • P Education  • Q Human health and social work activities  • R Arts, entertainment and recreation • S Other service activities

  6. Regional Seminar on Developing A Program for the Implementationof the2008 SNA and Supporting Statistics11-13 September 2013 / Ankara - Turkey Structural Business Survey • Sampling frame, sampling unit • Business register (municipality frame also added for 3600) • Enterprise • Estimation dimension

  7. Regional Seminar on Developing A Program for the Implementationof the2008 SNA and Supporting Statistics in Turkey 11-13 September 2013 / Ankara - Turkey Structural Business Survey • Full enumeration limits • All enterprises having more than 20 employees • In terms of sectors, some activities according to NACE Rev.2 class level • The numbers of enterprises less than 100 according to NACE Rev.2 class level • For 3600, 81 province center municipalities and municipalities where population is greater than 100.000 • Total enumeration ≌ 104.000 (2012) • Sampling method • Stratified sampling

  8. Regional Seminar on Developing A Program for the Implementationof the2008 SNA and Supporting Statistics in Turkey 11-13 September 2013 / Ankara - Turkey Structural Business Survey • Sample size • Sample size for NACE Rev. 2, 4 digit level determined by using variable variances and Compromise Allocation • Variables used: Turnover, production value, value-added at factor cost, total purchases of goods and services, personnel cost, number of persons employed • Final sample size decision made by iterative process which assure minimum strata size • Total sample size ≌ 66.500 (2012) • Aim: Allocate sample size optimally to stratas increasing the representativity of the estimations.

  9. Regional Seminar on Developing A Program for the Implementationof the2008 SNA and Supporting Statistics11-13 September 2013 / Ankara - Turkey Structural Business Survey • Sample selection • Poisson Sampling (Sequential Simple Random Sampling for 3600) • Random selection methods using permanent random numbers • Aim: According to TurkStat needs either coordinate samples or reduce response burden • Estimation • Horvitz-Thompson Ratio Estimator • Imputation for non-response

  10. Regional Seminar on Developing A Program for the Implementationof the2008 SNA and Supporting Statistics11-13 September 2013 / Ankara - Turkey Supply and Use Survey • Classifications • NACE Rev. 2 • Geoghrapical Coverage • Turkey • Sampling frame, sampling unit • Business Register and Financial Intermediary Institution Survey frame • Enterprise • Coverage • All enterprises covered by sectoral coverage.

  11. Regional Seminar on Developing A Program for the Implementationof the2008 SNA and Supporting Statistics11-13 September 2013 / Ankara - Turkey • Supply and Use Survey • Sectoral Coverage • B Mining and quarrying • C Manufacturing • D Electricity, gas, steam and air conditioning supply • E Water supply; sewerage, waste management and remediation activities • F Construction • G Wholesale and retail trade; repair of motor vehicles and motorcycles • H Transportation and storage • I Accommodation and food service activities  • J Information and communication • K Financial and insurance activities • L Real estate activities • M Professional, scientific and technical activities • N Administrative and support service activities  • P Education  • Q Human health and social work activities  • R Arts, entertainment and recreation • S Other service activities

  12. Regional Seminar on Developing A Program for the Implementationof the2008 SNA and Supporting Statistics11-13 September 2013 / Ankara - Turkey Supply and Demand Survey • Estimation dimension • Sampling method • Stratified sampling • Sample size • Sample size for NACE Rev.2, 3 digit level determined by using Compromise Allocation • Final sample size decision made by iterative process which assure minimum strata size for 4 digit sub-stratas (Total sample size = 20.227) • Aim: Allocate sample size optimally to stratas increasing the representativity of the estimations.

  13. Regional Seminar on Developing A Program for the Implementationof the2008 SNA and Supporting Statistics11-13 September 2013 / Ankara - Turkey Supply and Demand Survey • Sample selection • Poisson Sampling • Random selection method using permanent random numbers • Aim: Coordinate samples of SBS and Supply and Demand Survey • Estimation • Horvitz-Thompson Ratio Estimator

  14. Regional Seminar on Developing A Program for the Implementationof the2008 SNA and Supporting Statistics11-13 September 2013 / Ankara - Turkey Planning activities • Reduce response burden • Widespread usage of sampling coordination • Studying on some surveys’ full enumeration parts to estimate by sampling • Improving estimation methodologies • Model-Based and Model Assisted Estimator • Robust Estimations

  15. Regional Seminar on Developing A Program for the Implementationof the2008 SNA and Supporting Statistics11-13 September 2013 / Ankara - Turkey THANK YOU… cenkermetin@tuik.gov.tr

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