Australian Bureau of Statistics
8153.0 - Internet Activity, Australia, Dec 2008 Quality Declaration
Previous ISSUE Released at 11:30 AM (CANBERRA TIME) 06/04/2009
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QUALITY DECLARATION - SUMMARY
The IAS includes information reported by all ISPs operating in Australia as at 31 December (full census) and 30 June (reduced scope survey).
All Australian ISPs with active subscribers are surveyed. One of two form types are sent to each ISP depending on the number of active subscribers the ISP has:
Data for the December quarter are released approximately 4 months after the end of the reference period.
Only Australian ISPs with more than 10,000 active subscribers are sent a long form which asks all questions and covers all data items, except for questions relating to SPAM and other services.
Data for the June quarter are released approximately 3 months after the end of the reference period.
This approach to the IAS provides frequent and timely data on key trends keeping resource usage and provider load to acceptable levels, particularly for the smaller ISPs.
As the IAS does not have a sample component, the data are not subject to sampling variability. However, other inaccuracies, collectively referred to as non-sampling errors, may affect the data. These non-sampling errors may arise from a number of sources, including:
Every effort has been made to reduce non-sampling error to a minimum by careful design and testing of questionnaires, efficient operating procedures and systems, appropriate methodology and contact with providers to resolve anomalies. Response rates are generally very high for the IAS which in turn increases the accuracy and level of the data which can be released for users. Thorough editing of the data received is undertaken to ensure that the integrity of the collection is upheld.
The ability of ISPs to report volumes of data downloaded is variable. Data presented for this item should only be considered as an indicative measure of internet activity during the reference period and therefore should be used with caution.
Content of the IAS has evolved continuously since the commencement of the survey in 2001, so data items are not always comparable over time. This has mainly been due to the take up of new technologies which previously did not exist, e.g. dial-up replaced by broadband, higher access speeds, the emergence of mobile wireless access technology.
The number of ISPs reporting to the IAS does not necessarily equal the number of ISPs operating in Australia at the end of the reference period. Some ISPs have common ownership and as such provide data for all subsidiary ISPs on the one survey form. This should be taken into consideration when comparing the count of ISPs from the IAS to other data sources.
Comparison of IAS data between December and June quarters should be undertaken cautiously. The December quarter data are from a full census, therefore covering all operating ISPs in Australia as at that date. For the June quarter, data are only collected from those ISPs with more than 10,000 active subscribers. This means that not all data can be released in a June quarter due to confidentiality reasons and that the data aren't comparable over time (e.g. wireless or satellite technology).
The IAS covers the supply side of the internet market where the following ABS collections cover the demand side of the internet market and should not be directly compared:
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This page last updated 11 September 2009