Annual Agricultural Sample Survey Report 2014-2015
Tanzania, 2016
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TZA-NBS-AASS-2014-2015-v01
Annual Agricultural Sample Survey Report 2014-2015
| Name | Country code |
|---|---|
| Tanzania | TZA |
Agricultural Survey [ag/oth]
This is the first survey of its kind conducted in Tanzania using Point Sample Area Frame Methodology, therefore it limits the comparisons with the previous agriculture censuses and surveys data due to different methodologies applied. The survey collected detailed information on area and production for major crops, potentially livestock and fish farming
The survey collected detailed information on area and production for major crops, potentially livestock and fish farming. These crops include maize, paddy, sorghum, wheat, bulrush millet, finger millet, soybeans, cotton and, tobacco. A brief summary of operators and farm characteristics is also given
Sample survey data [ssd]
physical locations
Version
Version 1.0 (October, 2016)
2016-09-30
Scope
The Scope the Annual Agriculture Sample Survey includes:
- The Point Details, Farm Operator Details, Farm Area, Crops During Short Rainy Season Of 2014/15 Agriculture Year, Crops During Long Rainy Season Of 2014/15 Agriculture Year, Livestock And Fish Farming
Coverage
National, Mainland (or Zanzibar), Regions
A statistically sound sample of farm operators was selected using a the point sample area frame. A total of 21,210 sample points were selected. Of the 21,210 sample points, 15,281 points were completed for a 72% response rate.
Producers and sponsors
| Name | Affiliation |
|---|---|
| National Bureau of Statistics | Government of Tanzania |
| Office of the Chief Government Statistician | Government of Zanzibar |
| Name | Affiliation | Role |
|---|---|---|
| Ministry of Livestock and Fisheries, Zanzibar | The Revolutionary Government of Zanzibar | Technical assistance |
| President’s Office, Regional Administration and Local Governments | The Government of Tanzania | Technical assistance |
| Ministry of Industries, Trade and Investment | The Government of Tanzania | Technical assistance |
| The United States Agency for International Development | United Nation | Technical Support |
| United States Department of Agriculture | United Nation | Technical Support |
| Ministry of Agriculture, Livestock and Fisheries; Ministry of Agriculture and Natural Resource, Zanzibar | The Revolutionary Government of Zanzibar | Technical assistance |
| Ministry of Agriculture, Food Security and Cooperatives | The Government of Tanzania | Technical assistance |
| Ministry of Livestock and Fisheries Developmen | The Government of Tanzania | Technical assistance |
| Name | Role |
|---|---|
| Government of Tanzania | Financial Support |
| United States Agency for International Development | Financial Support |
| United States Department of Agriculture | Financial Support |
| Name | Role |
|---|---|
| Tanzania regional and district officials | Support |
Sampling
The point sample area frame was used to select a statistically sound sample of farm operators than the household-based sampling methods currently used. A total of 21,210 sample points were selected. This method was used as there were no reliable sampling frame identified as information on farm operators were not readily available for consistent monitoring or sampling.
Of the 21,210 sample points, 15,281 points were completed giving out a 72% response rate
Survey instrument
The well structured questionnaire was used. It covered both large scale and household farming in detail . The following topics were covered ; Farm Ownership, Land Tenure, Crop Production, Crop Prices, Livestock Population and Fish Production.
Data collection
| Start | End |
|---|---|
| 2016-02-01 | 2016-03-31 |
- Face-to-face [f2f]
| Name | Affiliation |
|---|---|
| National Bureau of Statistics | Government of Tanzania |
| Office of the Chief government Statistician | The Revolutionary Government of Zanzibar |
The first check of the questionnaire was done by enumerators in the field, while the second check was done by enumerator team supervisors, followed by regional and national supervisors during the supervision period. Supervisory visits at all levels of supervision, focused on consistency checks of the questionnaires. Inconsistencies encountered were corrected, and where necessary, a return visit to the respondent was made by the enumerator to correct the information.
Data collection activities for the Survey took one month to complete from February to March, 2016. The only method used for data collection was face to face interview. Field work was monitored through a hierarchical system of supervisors at the top of which was the National Team, followed by the regional supervisors and enumerator team supervisors. The National Team included two senior supervisors who were responsible for overall direction of field operations and responded to queries raised outside the scope of the training exercise.
Data processing
All data were entered manually using CSPro by a staff hired specifically for editing and data entry. Prior to data entry, all questionnaires were cleaned manually to maintain the quality of the data. This involved checking to see if the questionnaire was complete, had correct identifications and correctly filled in information
Data Access
| Name | Affiliation | URL | |
|---|---|---|---|
| National Bureau of Statistics | Government of Tanzania | www.nbs.go.tz | dg@nbs.go.tz |
| Is signing of a confidentiality declaration required? | Confidentiality declaration text |
|---|---|
| yes | Confidentiality of respondents is guaranteed by section 20 of Tanzania Statistics act number 1 of 2002. Before being granted access to the dataset, all users have formally agree: 1. All identifying information such as the name and address of respondent has been removed; and 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. Not 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; |
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 Tanzania 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
The data user shall acknowledge that any available intellectual property righht, including copyright and the data of Employment and Earnings Survey 2014 version 1.0 are owned by National Bureau of Statistics, Tanzania
Disclaimer and copyrights
The data user shall acknowledge that any available intellectual property righht, including copyright and the data of Employment and Earnings Survey 2014 version 1.0 are owned by National Bureau of Statistics, Tanzania
(c) 2014, National Bureau of Statistics
Contacts
| Name | Affiliation | |
|---|---|---|
| Director General | National Bureau of Statistics | dg@nbs.go.tz |
| Agriculture Stistics Departmental Manager | National Bureau of Statistics | tito.mwisomba@nbs.go.tz |
| Desk Officer, AASS | National Bureau of Statistics | festo.mwemutsi@nbs.go.tz |
| NADA Administrator | National Bureau of Statistics | ariv.severe@nbs.go.tz |
Metadata production
DDI-TZA-NBS-AASS-2014-V1.0
| Name | Affiliation | Role |
|---|---|---|
| National Bureau of Statistics | Government of Tanzania | Metadata Producer |
2016-10-28
Metadata version
version 1.0 (October 2016)