Table of Contents i United Republic of Tanzania NATIONAL SAMPLE CENSUS OF AGRICULTURE 2002/2003 Volume I: TECHNICAL AND OPERATION REPORT National Bureau of Statistics, Ministry of Agriculture and Food Security, Ministry of Water and Livestock Development, Ministry of Cooperatives and Marketing, Presidents Office, Regional Administration and Local Government, Ministry of Finance and Economic Affairs – Zanzibar September 2006 Technical and Operational Report Table of Contents i TABLE OF CONTENTS Table of contents ........................................................................................................................................................... i Acronyms .......................................................................................................................................................... v Preface ......................................................................................................................................................... vi Chapter 1: General background................................................................................................................................ 1 1.1 Introduction .................................................................................................................................................... 1 1.2 Rationale of the Agriculture Sample Census .................................................................................................. 1 1.2.1 Census Objectives............................................................................................................................. 2 1.2.2 Census Coverage.............................................................................................................................. 2 1.2.3 Census Scope.................................................................................................................................... 2 1.3 Main Activities Undertaken............................................................................................................................ 3 Chapter 2: Methodology............................................................................................................................................. 4 2.1 Census Organisation ....................................................................................................................................... 4 2.2 Tabulation Plan Preparation............................................................................................................................ 4 2.3 Sample Design................................................................................................................................................ 4 2.4 Questionnaire Design and Other Census Instruments..................................................................................... 5 2.5 Field Pre-testing of the Census Instruments ................................................................................................... 5 2.6 Training of trainers, supervisors and enumerators.......................................................................................... 5 2.7 Information, Education and Communication (IEC) Campaign ...................................................................... 5 2.8 Data Collection ............................................................................................................................................... 6 2.9 Field supervision and Consistence Checks ..................................................................................................... 6 2.10 Data Processing and Analysis......................................................................................................................... 6 2.10.1 Data Entry........................................................................................................................................ 6 2.10.2 Data Structure Formatting............................................................................................................... 7 2.10.3 Batch Validation............................................................................................................................... 7 2.10.4 Tabulations....................................................................................................................................... 7 2.10.5 Analysis and Report Preparation ..................................................................................................... 7 2.11 Data Quality.................................................................................................................................................... 7 2.12 Funding Arrangement..................................................................................................................................... 8 Chapter 3: The Sample Census Organization .......................................................................................................... 9 3.1 General Overview........................................................................................................................................... 9 3.2 Sample Census Administration....................................................................................................................... 9 3.2.1 National Level .................................................................................................................................. 9 3.2.2 Regional Level.................................................................................................................................. 9 3.2.3 District Level .................................................................................................................................. 10 3.3 Composition and Functions of Technical Committee................................................................................... 10 3.3.1 Agriculture Sample Census Technical Committee.......................................................................... 10 3.3.2 Census and surveys Technical Working Group.............................................................................. 10 3.3.3 Information, Education and communication (IEC) Advocacy for the agricultural Sample Census............................................................................................................................... 11 Technical and Operational Report Table of Contents ii 3.4 Logistics for the Agricultural Sample Census .............................................................................................. 11 2.4.1 Logistics Team................................................................................................................................ 11 Chapter 4: The Sample Design for the 2003 Agricultural Sample Census ................................................. 13 4.1 Introduction .................................................................................................................................................. 13 4.2 Design of the National Master Sample ......................................................................................................... 13 4.3 Design of the National Sample Census of Agriculture ................................................................................. 13 4.4 Estimation..................................................................................................................................................... 16 4.4.1 Village/EA estimates....................................................................................................................... 16 4.4.2 District Estimates .......................................................................................................................... 16 4.4.3 Regional Estimates ......................................................................................................................... 17 4.4.4 National Estimates ......................................................................................................................... 17 4.5 Weights or Expansion Factors (Primary and Secondary stage weighting factors) ....................................... 17 4.5.1 Primary stage weighting factors..................................................................................................... 18 4.5.2 Secondary stage weighting factors................................................................................................. 18 4.5.3 The final weights table.................................................................................................................... 19 4.5 Calculation of Sampling Errors .................................................................................................................... 20 Chapter 4: General Terms, Concepts and Definitions.................................................................................. 23 5.1 Important Considerations.............................................................................................................................. 23 5.2 Concepts and Definitions.............................................................................................................................. 23 5.2.1 Household and Holding.................................................................................................................. 23 5.2.2 Holding Characteristics ................................................................................................................. 24 5.2.3 Land Access/Ownership/Tenure....................................................................................................