8655.0 - Cafes, Restaurants and Catering Services, Australia, 2006-07 Quality Declaration
Latest ISSUE Released at 11:30 AM (CANBERRA TIME) 28/04/2008
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The statistics presented in this publication were compiled from data collected from businesses involved in the provision of cafe, restaurant or catering services, in respect of the 2006-07 financial year. The collection was conducted as part of the Australian Bureau of Statistics (ABS) business survey program for the 2006-07 reference year. The data were collected under the authority of the Census and Statistics Act 1905.
For information about the institutional environment of the ABS, including its legislative obligations, financing and governance arrangements, and mechanisms for scrutiny of ABS operations, please see ABS Institutional Environment.
The main purpose of the survey was to measure the size and structure of cafes, restaurants and catering services in Australia during the 2006-07 financial year. Information from this survey is an essential input to the benchmarking of the Tourism Satellite Account also produced by the ABS. Additionally, the information is used by government departments to assist in policy formulation and review, aswell as by private sector analysts.
Survey questionnaires were mailed to cafe, restaurant and catering businesses in mid-August 2007. The ABS aims to publish estimates from its business survey program within twelve 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 national and state/territory statistics to be produced from a small sample of 837 businesses.
Two types of error can occur in estimates that are based on a sample survey: non-sampling error and sampling error.
Non-sampling error arises from inaccuracies in collecting, recording and processing the data. Every effort was made to minimise reporting error by the careful design of questionnaires, intensive training of survey analysts and efficient data processing procedures.
Non-sampling error also occurs when information cannot be obtained from all businesses selected in the survey. For the 2006-07 Cafes, Restaurants and Catering Services Survey, there was an 87% response rate from all businesses that were surveyed and found to be operating during the reference period. Data were imputed for the remaining 13% of operating businesses. Imputed responses contributed 8% to the estimate of total income.
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.
Another measure of sampling error is the relative standard error, which is obtained by expressing the standard error as a percentage of the estimate to which it refers. The relative standard error is a useful measure in that it provides an immediate indication of the sampling error in percentage terms, and this avoids the need to refer also to the size of the estimate. Relative standard errors of key estimates are available in the Explanatory Notes of Cafes, Restaurants and Catering Services, Australia (cat. no. 8655.0).
The ABS has been conducting surveys of cafes, restaurants and catering services periodically since 1986-87. While the ABS seeks to maximise consistency and comparability over time by minimising changes to the survey, sound survey practice requires ongoing development to maintain the integrity of the data, its relevance to the changing needs of users and the efficiency of the collection. Additionally, the irregular frequency of the surveys mitigates against designing them to produce reliable estimates of change over time.
Changes made to the Cafes, Restaurants and Catering Services Survey include changes in sampling methods, estimation methods, concepts, data item definitions and classifications. In introducing such changes the ABS has revised previous estimates whenever feasible to maximise consistency and coherence with current estimates. For a full list of changes made between the 2003-04 and 2006-07 cycles of the Cafes, Restaurants and Catering Services Survey refer to the Explanatory Notes in the publication Cafes, Restaurants and Catering Services, Australia (cat. no. 8655.0).
The estimates from the Cafes, Restaurants and Catering Services Survey are only available as original series and are not seasonally or trend adjusted. Although financial estimates in this publication relate to the full twelve months, employment estimates relate to the last pay period ending in June 2007, or the last pay period of the month specified. As such, estimates of values per person employed can be affected by any fluctuations in employment during the reference period. This is particularly relevant when assessing the catering estimates owing to fluctuations in employment caused by the event-based nature of catering services.
Further information on terminology and other technical aspects associated with statistics from the Cafes, Restaurants and Catering Services Survey can be found in the publication Cafes, Restaurants and Catering Services, Australia (cat. no. 8655.0), which contains detailed Explanatory Notes, a Technical Note and Glossary.
Data from the 2006-07 Cafes, Restaurants and Catering Services Survey are available in a variety of formats. The formats available free of charge on the ABS website are:
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