Australian Bureau of Statistics
8226.0 - Electricity, Gas, Water and Waste Services, Australia, 2006-07 Quality Declaration
Latest ISSUE Released at 11:30 AM (CANBERRA TIME) 15/08/2008
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QUALITY DECLARATION - SUMMARY
The statistics presented have been derived using a combination of directly collected data from the annual Economic Activity Survey (EAS), conducted by the Australian Bureau of Statistics (ABS), and Business Activity Statement (BAS) data provided by businesses to the Australian Taxation Office (ATO). The survey data were collected under the authority of the Census and Statistics Act 1905. The Income Tax Assessment Act 1936 provides for the ATO to pass information to the Australian Statistician for the purposes of the Census and Statistics Act 1905.
The data illustrate the size, structure and performance of the electricity, gas, water and waste services industry in Australia during the 2006-07 financial year and, to a lesser extent, over time. The estimates are also used in the compilation of Australian National Accounts aggregates, also produced by the ABS.
For most industry subdivisions (as specified in ANZSIC 2006) - namely, Electricity supply, Gas supply, Water supply, and Waste services - estimates are presented of: employment; income; expenses; industry value added; operating profit before tax; selected components of these aggregates and derivations; and capital expenditure.
The Survey is conducted annually. Forms are despatched in August. The business taxation data are received in November following the end of the reference period. The ABS aims to publish estimates from its annual business survey program within twelve to fifteen months of the end of the reference period.
The ABS aims to produce high quality data from its industry collections while minimising the reporting burden on businesses. To achieve this, extensive effort is put into survey and questionnaire design, collection procedures and processing. Estimates from previous iterations of this survey were produced using the number raised estimation methodology. The 2006-07 survey used generalised regression estimation. Generalised regression estimation is a form of ratio estimation which makes use of auxiliary data items which are strongly correlated with key data items directly collected by the ABS from businesses. The auxiliary variables used in this survey were turnover and wages, from data sourced from the Australian Taxation Office (ATO). Use of this methodology allowed high quality statistics to be produced from a small sample of 628 businesses.
Sampling error occurs when a sample, rather than the entire population, is surveyed. It reflects the difference between estimates based on a sample and those that would have been obtained had a census been conducted. One measure of this difference is the standard error. There are about two chances in three that a sample estimate will differ by less than one standard error from the figure that would have been obtained if all businesses had been included in the survey, and about nineteen chances in twenty that the difference will be less than two standard errors.
The ABS has been conducting annual surveys of the electricity and gas industry since 1968-69, and of the water supply industry since 1995-96. The Waste Services industry was not within ANZSIC Division D under the previous edition of the ANZSIC, and so was included in this survey for the first time in 2006-07.
Estimates from the survey of the electricity, gas, water and waste services industry are available as original series only, and are not seasonally or trend adjusted.
Data from the 2006-07 survey of the electricity, gas, water and waste industry are available in a variety of formats. The formats available free of charge on the ABS website are:
If the information you require is not available as a standard product, the ABS may have other relevant data available on request and for a charge. Please contact the National Information and Referral Service on 1300 135 070 or Phillip Lui on (02) 9268 4269.
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This page last updated 14 August 2008