Agriculture Sample Census Survey 2002-2003
United Republic of Tanzania, Zanzibar, 2004
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Reference ID
TZA_2002-2003_ASCS_v01_EN_M_v01_A_OCS
Producer(s)
National Bureau of Statistics, Office of Chief Government Statistician-Zanzibar
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Oct 24, 2019
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Oct 24, 2019
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Identification
Survey ID Number
TZA_2002-2003_ASCS_v01_EN_M_v01_A_OCS
Title
Agriculture Sample Census Survey 2002-2003
Country
| Name | Country code |
|---|---|
| United Republic of Tanzania, Zanzibar | TZA |
Study type
Agricultural Census [ag/census]
Abstract
The 2002/03 Agriculture Sample Census Survey (ASCS) was designed to meet the data needs of a wide range of users down to district level including policy makers at local, regional and national levels, rural development agencies, funding institutions, researchers, NGOs, farmer organisations, etc. As a result the dataset is both more numerous in its sample and detailed in its scope compared to previous censuses and surveys. To date this is the most detailed Agricultural Census carried out in Africa. The census was carried out in order to:
· Identify structural changes if any, in the size of farm household holdings, crop and livestock production, farm input and implement use. It also seeks to determine if there are any improvements in rural infrastructure and in the level of agriculture household living conditions;
· Provide benchmark data on productivity, production and agricultural practices in relation to policies and interventions promoted by the Ministry of Agriculture and Food Security and other stake holders.
· Establish baseline data for the measurement of the impact of high level objectives of the Agriculture Sector Development Programme (ASDP), National Strategy for Growth and Reduction of Poverty (NSGRP) and other rural development programs and projects.
· Obtain benchmark data that will be used to address specific issues such as: food security, rural poverty, gender, agro-processing, marketing, service delivery, etc.
· Identify structural changes if any, in the size of farm household holdings, crop and livestock production, farm input and implement use. It also seeks to determine if there are any improvements in rural infrastructure and in the level of agriculture household living conditions;
· Provide benchmark data on productivity, production and agricultural practices in relation to policies and interventions promoted by the Ministry of Agriculture and Food Security and other stake holders.
· Establish baseline data for the measurement of the impact of high level objectives of the Agriculture Sector Development Programme (ASDP), National Strategy for Growth and Reduction of Poverty (NSGRP) and other rural development programs and projects.
· Obtain benchmark data that will be used to address specific issues such as: food security, rural poverty, gender, agro-processing, marketing, service delivery, etc.
Kind of Data
Sample survey data [ssd]
Unit of Analysis
Households
Scope
Notes
The census covered agriculture in detail as well as many other aspects of rural development and was conducted using three different questionnaires:
·Small scale farm questionnaire
·Community level questionnaire
·Large scale farm questionnaire
·Small scale farm questionnaire
·Community level questionnaire
·Large scale farm questionnaire
Topics
| Topic |
|---|
| Trade, Industry and Markets |
Coverage
Geographic Coverage
National Coverage
Universe
Small scale and Large Scale Farmers within the community.
Producers and sponsors
Primary investigators
| Name | Affiliation |
|---|---|
| National Bureau of Statistics | Ministry of Planning and Empowerment |
| Office of Chief Government Statistician-Zanzibar | Ministry of Finance and Economic Affairs |
Producers
| Name | Role |
|---|---|
| Ministry of Agriculture and Food Security | Technical Assistance |
| Ministry of Water and Livestock Development | Technical Assistance |
| Ministry of Cooperatives and Marketing | Technical Assistance |
| Presidents Office, Regional Administration and Local Government | Technical Assistance |
| Ministry of Finance and Economic Affairs | Technical Assistance |
| Food and Agriculture Organization | Technical Assistance |
Funding Agency/Sponsor
| Name | Abbreviation | Role |
|---|---|---|
| Government of Tanzania | GOTZA | Financial support |
| United Nation Development Program | UNDP | Financial support |
| Department for International Development | DFID | Financial support |
| Japan Government | GJ | Financial support |
| European Union | EU | Financial support |
Sampling
Sampling Procedure
The Mainland sample consisted of 3,221 villages. These villages were drawn from the National Master Sample (NMS) developed by the National Bureau of Statistics (NBS) to serve as a national framework for the conduct of household-based surveys in the country. The NMS was developed from the 2002 Population and Housing Census. The total Mainland sample was 48,315 agricultural households. In Zanzibar a total of 317 Enumeration Areas (EAs) were selected and 4,755 agriculture households were covered. Nationwide, all regions and districts were sampled except three urban district (two from Mainland and one from Zanzibar).
In both Mainland and Zanzibar, a stratified two stage sample was used. The number of villages/Enumeration Areas (EAs) were selected for the first stage with a probability proportional to the number of villages in each district. In the second stage, 15 households were selected from a list of farming households in each Village/EA using systematic random sampling.
In both Mainland and Zanzibar, a stratified two stage sample was used. The number of villages/Enumeration Areas (EAs) were selected for the first stage with a probability proportional to the number of villages in each district. In the second stage, 15 households were selected from a list of farming households in each Village/EA using systematic random sampling.
Weighting
Weights or expansion factors were calculated for every selected village/EA. These weights were used to produce tables for Tanzania Mainland and Zanzibar. The weights were prepared and calculated at different stages, including:
1. Primary stage weighting; using estimates on the number of rural households for each district, the total number of households for each selected village and, the number of selected villages in each district.
2. Secondary stage weighting; using estimates from the number of farming households and, number of selected farming households.
Refer to page 17-20 of the technical report document for detailed information on the weighting calculation and procedure.
1. Primary stage weighting; using estimates on the number of rural households for each district, the total number of households for each selected village and, the number of selected villages in each district.
2. Secondary stage weighting; using estimates from the number of farming households and, number of selected farming households.
Refer to page 17-20 of the technical report document for detailed information on the weighting calculation and procedure.
Data Collection
Dates of Data Collection
| Start | End |
|---|---|
| 2004-01-15 | 2004-03-15 |
Data Collection Mode
Face-to-face paper [f2f]
Data Appraisal
Estimates of Sampling Error
Very low standard errors, indiicating that the data is accurate. The standard errors range from 0.0024 - 0.346.
Refer to page 21-22 of the technical report document for calculations on the standard error estimates.
Refer to page 21-22 of the technical report document for calculations on the standard error estimates.
Access policy
Contacts
| Name | Affiliation | URL | |
|---|---|---|---|
| Director General | National Bureau of Statistics | [email protected] | www.nbs.go.tz |
Confidentiality
Confidentiality of respodents is guaranteed by section 20 of Tanzania Statistics act number 1 of 2002. Before being granted access to the dataset, all users must formally agree that:
1. All identifying information such as the name and address of respondent has been removed;
2. The information is disclosed in a manner that is not likely to enable the identification of the particular person or undertaking or business to which it relates;
3. There is no attempt to identify any particular person or undertaking or business;
4. Use of information for research or statistically purpose only;
5. Not to disclose the information to any other person, organization;
6. When required by the Director General, return all documents made available to him to the Director General;
7. Comply with the directions given by the Director General relating to the records;
8. Every person involved in the research or statistical project for which information is disclosed pursuant to this section shall make the declaration of secrecy set out in the first schedule.
Access conditions
Tanzania NBS considered three levels of accessibility:
1) Public use files, accessible by all
2) Licensed datasets, accessible under certain conditions
3) Datasets only accessible on location, for certain datasets
The dataset has been anonymized and available as a public use dataset. It accessible to all for statistical and research purposes only, under the following terms and conditions:
1. The data and other material will not be redistributed or sold to other individuals, institutions, or organization without the written agreement of the National Bureau of Statistics.
2. The data will be used for statistical and scientific research purposes only. They will be used solely for reporting of aggregated information, and not for investigation of specific individuals or organizations.
3. No attempt will be made to produce links among dataset provided by the National Bureau of Statistics, or among data from the (National Bureau of Statistics) and other datasets that could identify individuals or organizations
4. No attempt will be made to re-identify respondents, and no use will be made of the identify of any person or establishment discovered inadvertently. Any such discovery would immediately be reported to the National Bureau of Statistics.
5. Any books, articles, conference papers, theses, dissertations, reports, or other publications that employ data obtained from the National Bureau of Statistics will cite the source of data in accordance with the Citation Requirement provided with each dataset.
1) Public use files, accessible by all
2) Licensed datasets, accessible under certain conditions
3) Datasets only accessible on location, for certain datasets
The dataset has been anonymized and available as a public use dataset. It accessible to all for statistical and research purposes only, under the following terms and conditions:
1. The data and other material will not be redistributed or sold to other individuals, institutions, or organization without the written agreement of the National Bureau of Statistics.
2. The data will be used for statistical and scientific research purposes only. They will be used solely for reporting of aggregated information, and not for investigation of specific individuals or organizations.
3. No attempt will be made to produce links among dataset provided by the National Bureau of Statistics, or among data from the (National Bureau of Statistics) and other datasets that could identify individuals or organizations
4. No attempt will be made to re-identify respondents, and no use will be made of the identify of any person or establishment discovered inadvertently. Any such discovery would immediately be reported to the National Bureau of Statistics.
5. Any books, articles, conference papers, theses, dissertations, reports, or other publications that employ data obtained from the National Bureau of Statistics will cite the source of data in accordance with the Citation Requirement provided with each dataset.
Citation requirements
"National Bureau of Statistics, Agriculture Sample Census Survey 2002-2003 (AGRSCS 2002-2003), version 1.0 of the public use dataset (March 2004) provided by the National Bureau of Statistics, www.nbs.go.tz".
Disclaimer and copyrights
Disclaimer
"The user of the data should acknowledges that, National Bureau of Statistics is the original collector of the data, the authorised distributor of the data, and the relevant funding agency bear no responsibility for use of the data or for interpretations or inferences without a written agreement from the National Bureau of Statistics"
Metadata production
DDI Document ID
DDI_TZA_2002-2003_ASCS_v01_EN_M_v01_A_OCS_FAO
Producers
| Name | Abbreviation | Affiliation | Role |
|---|---|---|---|
| Office of Chief Statistician | OCS | Food and Agriculture Organization | Metadata adapted for FAM |
| National Bureau of Statistics | NBS | Ministry of Planning and Empowerment | Metadata producer |
| Office of Chief Government Statistician in Zanzibar | OCGS | Government of Zanzibar | Metadata producer |
| Accelerated Data Program | ADP | PARIS21 | Metadata reviewer |
DDI Document version
TZA_2002-2003_ASCS_v01_EN_M_v01_A_OCS_v01