Data validation in the 2006/2007 data collection Teodora Brandmuller EUROSTAT teodora.brandmueller@cec.eu.int Urban Audit NUAC meeting 23 & 24 April 2007

The control methods – Variable controls Multivariate variable controls Male Resident Population + Female Resident Population = Total Resident Population Univariate variable control sum of the total residents at the SCD levels = total residents number at the city level Urban Audit NUAC meeting 23 & 24 April 2007

The control methods – Indicator controls Outlier detection Fixed ranges of accepted values according to common sense Nationals born abroad as a percentage of total population – Range 0%-20% Acceptable ranges of indicator values calculated using descriptive statistics Urban Audit NUAC meeting 23 & 24 April 2007

Urban Audit NUAC meeting 23 & 24 April 2007

Procedure of validation I. Variable control Pass Suspicious Fatal error Indicator control Review Correctexplain Urban Audit NUAC meeting 23 & 24 April 2007

Procedure of validation II. Indicator control Pass Suspicious Fatal error Dissemination Review Correctexplain Urban Audit NUAC meeting 23 & 24 April 2007

Timing of outlier detection I. 2006 2007 IV V VI VII VIII IX X XI XII I II III DK 01 Jun 2006   DE 01 May 2006 EE GR 13 Apr 2004 ES 01 Jul 2006 IT 30 Jun 2006 HU 01 Aug 2006 SK 14 Aug 2006 FIN SE UK 19 Jun 2006 Data collection period Outlier detection Urban Audit NUAC meeting 23 & 24 April 2007

Timing of outlier detection II. 2007 I II III IV V VI VII VIII IX X XI XII BE 12 Dec 2006   FR 22 Dec 2006 CY 05 Dec 2006 LV 21 Dec 2006 LT 13 Dec 2006 LU 11 Dec 2006 NL AT 01 Dec 2006 PL PT 14 Dec 2006 SI RO 01 Jan 2007 Data collection period Outlier detection Urban Audit NUAC meeting 23 & 24 April 2007

Comments and questions are welcome Urban Audit NUAC meeting 23 & 24 April 2007