EXPLANATORY NOTES
INTRODUCTION
1 This publication presents estimates from the ABS Vineyards 2015 collection.
2 The Vineyards 2015 collection was run on behalf of the Australian Grape and Wine Authority (AGWA). It is designed to collect small area, detailed wine grape varietal information. Information was collected from wine grape growers on selected wine grape varieties, including area of vines (bearing area, area not yet bearing and area removed), wine grape production and water use, including total area watered and volume of water used, water sources and watering methods. The results of this survey will be used to measure the viticulture industry's activity throughout Australia and to support decision making, research and analysis by grape and wine industry policy makers, researchers and the community.
3 Estimates in this publication are based on information obtained from the Vineyards collection for the 2015 harvest, year ending 30 June 2015. A copy of the 2015 Vineyards survey form can be found under the Downloads tab of this publication.
SCOPE AND COVERAGE
4 The Vineyards 2015 collection was a census of all in-scope vineyards. Estimates of area, production and yield are presented in the publication for Australia and states and territories, and are available for sub-state regions in the attached data cubes (which can be located under the Downloads tab of this publication). The sub-state regions are based on Australian Geographical Indication (GI) zones and regions. Data on watering sources and methods are also available in an attached data cube.
5 Australian GI Zones and GI Regions are official descriptions of Australian wine zones as defined in the Australian Grape and Wine Authority Act 2013. For more detail on Australian Geographical Indications (GIs), see the Australian Government ComLaw website.
6 The scope of the Vineyards 2015 collection was agricultural businesses undertaking viticultural activity recorded on the ABS Business Register (ABSBR) above a minimum size cut-off applied to the value of their agricultural operations.
For the purposes of this survey a business is identified as undertaking viticultural activity as defined by the 2006 edition of the Australian and New Zealand Standard Industrial Classification (ANZSIC). For more information, please refer to Australian and New Zealand Standard Industrial Classification (ANZSIC), 2006 (cat. no. 1292.0). The ABSBR is based on the Australian Business Register (ABR) which is administered and maintained by the Australian Taxation Office (ATO). Most businesses and organisations in Australia are required to obtain an Australian Business Number (ABN) from the ATO for their business operations.
7 A minimum size cut-off of $5,000 was applied to determine whether a business was in-scope for the Vineyards 2015 collection. This measure of size was based on the ABS' Estimated Value of Agricultural Operations (EVAO) or a derived value based on turnover reported by a viticultural business operation in its Business Activity Statement (BAS).
8 Only data on wine grapes was collected by the Vineyards 2015 collection. Information on table grapes and grapes for drying was excluded.
9 Viticulture statistics relate to the year in which the harvest occurred and are derived from information obtained in a collection of all known growers.
10 The Vineyards 2015 final estimates are based on a response rate of 87% from an in-scope population of approximately 7,900 viticultural businesses.
COLLECTION METHOD
11 Information for the Vineyards 2015 collection was collected through an electronic (web-based) survey form, supplemented with paper form collection on request and phone–based follow up. This was the first vineyards collection to use an e-form, with 83% of businesses using this mode of reporting.
RELIABILITY OF ESTIMATES (SAMPLE ERROR)
12 The estimates in this publication are based on information obtained from respondents to the Vineyards 2015 collection. However, since not all of the businesses that were selected provided data, the estimates are subject to sampling variability; that is, they may differ from the figures that would have been produced if all businesses had provided data.
13 Census data are subject to a number of inaccuracies resulting from errors by respondents or mistakes in collection or processing. Whilst many of these are corrected by careful processing procedures, some still remain. The effect of the remaining errors is generally small.
The main kinds of errors occurring in a Census are:
- Partial non-response: In some cases where an answer is not provided to a question, an answer may be imputed (often from other information on the form);
- Processing error: While such errors can occur in any processing system, quality management is used continuously to improve the quality of processed data, and to identify and correct data of unacceptable quality; and
- Respondent error: Because processing procedures cannot detect or repair all errors made by people in completing their forms, some remain in final data;
14 In this publication, 'sampling' variability of the estimates is measured by the relative standard error (RSE). Most published estimates have RSEs less than 10%. For some states and territories with limited production of certain varieties, RSEs are greater than 10%. Estimates that have an estimated RSE between 10% and 25% should be used with caution as they are subject to sampling variability too high for some purposes. Estimates with an RSE between 25% and 50% should also be used with caution as they are subject to sampling variability too high for most practical purposes.
Estimates with an RSE greater than 50% at the national, state and territory, and GI Zone level have been suppressed in this publication as they are considered too unreliable for general use. Where estimates for data items have been suppressed at the national, state or territory level, they have also been suppressed at the sub-state level. Where estimates for data items have been suppressed at the GI Zone level, they have also been suppressed at the GI Region level. Where figures have been suppressed, they have been included in relevant totals.
RSEs for all estimates are available on request.
ROUNDING
15 Where figures have been rounded or suppressed, discrepancies may occur between sums of the component items and totals.
RELATED PUBLICATIONS
16 Current publications and other products released by the ABS are listed under the Statistics page on the
ABS website. The ABS also issues a daily Release Advice on the website which details products to be released in the week ahead.
ABS DATA AVAILABLE ON REQUEST
17 As well as the statistics included in this and related publications, the ABS may have other relevant data available on request. Inquiries should be made to the National Information and Referral Service on 1300 135 070.
GENERAL ACKNOWLEDGMENT
18 ABS publications draw extensively on information provided freely by individuals, businesses, governments and other organisations. Their continued cooperation is very much appreciated. Without it, the wide range of statistics published by the ABS would not be available. Information received by the ABS is treated in strict confidence as required by the
Census and Statistics Act 1905.
PRIVACY
19 The
ABS Privacy Policy outlines how the ABS will handle any personal information that you provide to the ABS.
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