Identification
Survey ID Number
TZA_2014_AASS_v01_M
Title
Annual Agricultural Sample Survey 2014-2015
Country
| Name | Country code |
|---|---|
| Tanzania | TZA |
Study type
Agricultural Survey [ag/oth]
Series Information
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 the different methodologies applied. The survey collected detailed information on area and production for major crops, potentially livestock and fish farming.
Abstract
The Annual Agricultural Sample Survey (AASS) 2014-2015 was designed to provide more timely and accurate estimates of area and production for major crops and livestock in the URT regions. The size of the crops and number of animals are crucial information needed by many people involved in agriculture. Estimates derived from this survey supplied basic information needed by farmers, agribusinesses and government policy makers to make decisions for both short term and long-range planning. 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.
In the framework of the implementation of the Global Strategy to improve agricultural and rural Statistics, the Government of Tanzania in collaboration with the Food and Agriculture Organization of the United Nations (FAO), United States Department of Agriculture (USDA) and African Development Bank (AfDB) initiated the process of improving the agricultural statistics system of the country through strengthening Agricultural Statistics Program. The survey was financially supported by the USAID, Government of Tanzania and Ministry of Agriculture, Livestock and Fisheries. The overall objectives of AASS are:
1. To obtain basic data to be utilized in the preparation, formulation of policies and implementation of agricultural plans at national and regional levels in between the agricultural census years.
2. To obtain time series data on agricultural production & productivity at national and regional levels.
3. To obtain basic statistics for comparison on the development of the agriculture sector in the country.
In the framework of the implementation of the Global Strategy to improve agricultural and rural Statistics, the Government of Tanzania in collaboration with the Food and Agriculture Organization of the United Nations (FAO), United States Department of Agriculture (USDA) and African Development Bank (AfDB) initiated the process of improving the agricultural statistics system of the country through strengthening Agricultural Statistics Program. The survey was financially supported by the USAID, Government of Tanzania and Ministry of Agriculture, Livestock and Fisheries. The overall objectives of AASS are:
1. To obtain basic data to be utilized in the preparation, formulation of policies and implementation of agricultural plans at national and regional levels in between the agricultural census years.
2. To obtain time series data on agricultural production & productivity at national and regional levels.
3. To obtain basic statistics for comparison on the development of the agriculture sector in the country.
Kind of Data
Sample survey data [ssd]
Unit of Analysis
- Agricultural holders
- Crops
- Crops
Version
Version Description
v01
Version Date
2016-09-30
Scope
Notes
The 2014 Annual Agricultural Sample Survey Report covered the following topics:
- The point details
- Farm operator details
- Farm area
- Crops during short rainy season of the 2014-15 agricultural year
- Crops during long rainy season of the 2014-15 agricultural year
- Livestock and fish farming
- The point details
- Farm operator details
- Farm area
- Crops during short rainy season of the 2014-15 agricultural year
- Crops during long rainy season of the 2014-15 agricultural year
- Livestock and fish farming
Coverage
Geographic Coverage
1. National
2. Mainland (or Zanzibar)
3. Regions
2. Mainland (or Zanzibar)
3. Regions
Universe
A statistically sound sample of farm operators was selected using a Point Sample Area Frame. A total of 21,210 sample points were selected. Of the 21,210 sample points, 15,281 points were completed with a 72% response rate.
Producers and sponsors
Primary investigators
| Name | Affiliation |
|---|---|
| National Bureau of Statistics | Government of Tanzania |
Funding Agency/Sponsor
| Name | Abbreviation | Role |
|---|---|---|
| United States Agency for International Development | USAID | Financial and technical assistance |
| Government of Tanzania | GovTZA | Financial and technical assistance |
| Ministry of Agriculture, Livestock and Fisheries | MLFD | Financial and technical assistance |
Sampling
Sampling Procedure
At the onset of planning for the implementation of the 2014-15 AASS, a need for a reliable sampling frame was identified as information on farm operators were not readily available for consistent monitoring or sampling.
The point sample area frame provided a quicker and easier way 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. Of the 21,210 sample points, 15,281 points were completed for a 72% response rate.
The point sample area frame provided a quicker and easier way 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. Of the 21,210 sample points, 15,281 points were completed for a 72% response rate.
Response Rate
72%
Data Collection
Dates of Data Collection
| Start | End |
|---|---|
| 2016-02-01 | 2016-03-31 |
Data Collection Mode
Face-to-face [f2f]
Supervision
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 Collectors
| Name | Abbreviation | Affiliation |
|---|---|---|
| National Bureau of Statistics | NBS | Government of Tanzania |
| Office of the Chief Government Statistician | OCGS | The Revolutionary Government of Zanzibar |
Questionnaires
Questionnaires
A 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 Processing
Data Editing
All data were entered manually using Census and Survey Processing System (CSPro) by 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, and if it had correct identification and correctly filled out information.
Other Processing
Data processing involved the following activities:
1. Data entry
2. Data structure formatting
3. Batch validation
4. Tabulation
1. Data entry
2. Data structure formatting
3. Batch validation
4. Tabulation
Access policy
Access authority
| Name | Affiliation | URL | |
|---|---|---|---|
| National Bureau of Statistics | Government of Tanzania | dg@nbs.go.tz | www.nbs.go.tz |
Contacts
| Name | Affiliation | |
|---|---|---|
| Director General | National Bureau of Statistics | dg@nbs.go.tz |
| Agriculture Statistics Departmental Manager | National Bureau of Statistics | tito.mwisomba@nbs.go.tz |
| NADA Administrator | National Bureau of Statistics | ariv.severe@nbs.go.tz |
| Desk Officer, AASS (National Bureau of Statistics), festo.mwemutsi@nbs.go.tz | National Bureau of Statistics | ariv.severe@nbs.go.tz |
Confidentiality
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
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 the Director General.
Access conditions
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
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
Citation requirements
Use of the dataset must be acknowledged using a citation which would include:
- the Identification of the Primary Investigator
- the title of the survey (including country, acronym and year of implementation)
- the survey reference number
- the source and date of download
Example:
National Bureau of Statistics, Annual Agricultural Sample Survey Report (AASS) 2014-2015, Ref. TZA_2014_AASS_v01_M. Dataset downloaded from [URL] on [date].
- the Identification of the Primary Investigator
- the title of the survey (including country, acronym and year of implementation)
- the survey reference number
- the source and date of download
Example:
National Bureau of Statistics, Annual Agricultural Sample Survey Report (AASS) 2014-2015, Ref. TZA_2014_AASS_v01_M. Dataset downloaded from [URL] on [date].
Disclaimer and copyrights
Disclaimer
The user of the data acknowledges that the original collector of the data, the authorized distributor of the data, and the relevant funding agency bear no responsibility for use of the data or for interpretations or inferences based upon such uses.