QUALITY DECLARATION - SUMMARY
INSTITUTIONAL ENVIRONMENT
For information on the institutional environment of the Australian Bureau of Statistics (ABS), including the legislative obligations of the ABS, financing and governance arrangements, and mechanisms for scrutiny of ABS operations, please see ABS Institutional Environment.
RELEVANCE
Vineyards Estimates, Australia (ABS Cat. No 1329.0.55.002) presents final estimates from the annual Vineyards collection. This includes information at national and state levels on areas of vines (including areas bearing, not yet bearing, and those removed or grafted) and production of grapes (for winemaking, drying and table, and for other purposes). It also includes varietal data on areas, production and yield.
The Vineyards collection is run on behalf of the Grape and Wine Research and Development Corporation (GWRDC). The main user of this information is the Australian wine industry's Statistics Working Group (SWG) which is an industry body made up of representatives of industry peak bodies and represents the views of the industry on statistical matters. The output from the collection is essential for research and analysis by national, state and regional organisations involved in policy development, legislation, planning and infrastructure and by those directly involved in the grape and wine industries.
TIMELINESS
Vineyards Estimates, Australia (ABS Cat. No 1329.0.55.002) for 2007-08 will be released several months earlier than in previous years. The ABS was asked if it could produce acceptable quality final estimates earlier for the Vineyards industry. The ABS was able to achieve this by not releasing preliminary estimates (hence saving time in the production cycle) and accepting a slight reduction in response rate.
ACCURACY
All known vineyards are selected in the collection and data quality is being improved through advancements in coverage. Data from the 2007-08 Vineyards collection are based on a response rate of 85% which resulted in overall imputation rates of 7.9% (for area) and 8.3% (for production). The resultant estimates have been extensively edited to ensure the accuracy of the estimates produced. This included checking against earlier years and relevant other sources, and contacting data providers who had reported major changes or unusual values.
COHERENCE
The Vineyards collection is sent to all establishments with a special vineyards flag set on the Inteframe, or who have an Australian and New Zealand Standard Industrial Classification (ANZSIC) code of 0114/0131 (grape growing) or who show areas of vineyards on the Agricultural Commodity Survey/Census. Most data are directly comparable over different collection cycles. However, in 2007-08 the data on sources of water was collected by volume rather than area.
INTERPRETABILITY
The Vineyards collection provides varietal information on the main grape varieties grown and measures the industry's activity throughout Australia. Not all data from this collection are published. Some further data, including data for Australian Geographical Indications, are available on application to the ABS. Detailed explanatory notes are provided with the publication to assist users in determining and specifying their data requirements and to understand the concepts underlying the data.
ACCESSIBILITY
An extensive range of data are available from the Vineyards collection and a variety of other agriculture based collections.
If the information you require is not available as a standard product or service, then ABS Consultancy Services can help you with customised services to suit your needs. Inquiries should be made to either the National Information and Referral Service on 1300 135 070 or Agriculture Client Services on (03) 6222 5939.
Quality Declaration 
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