EXPLANATORY NOTES
INTRODUCTION
1 This release presents results from the Internet Activity Survey (IAS) conducted in respect of the three months ended 30 June 2011.
SCOPE AND COVERAGE
2 The June 2011 IAS covers Internet Service Providers (ISPs) who operated in Australia as at 30 June 2011. ISPs are defined as businesses that supply internet connectivity and access services to individuals, households, businesses, government and other organisations. Libraries, internet kiosks, internet cafes and hotspots which provide internet access on a casual basis are excluded from the survey population.
3 The source of the IAS population frame is a list of ISPs from the Telecommunications Industry Ombudsman (TIO), with which ISPs are required to register. Using this list as a basis, the ABS maintains its own confidential list of ISPs. The TIO register may contain the following organisations that are out of scope or counted differently on the IAS: those that are no longer operating as ISPs, including wholesalers and web hosting ISPs only; those where there is common ownership and, therefore reporting is consolidated for these ISPs on the IAS; and other types of organisations that are required to register with the TIO (for example, telecommunications companies which do not provide ISP services).
4 The reference periods for this collection are June and December to align with international reporting of broadband statistics by the Organisation for Economic Co-operation and Development (OECD). The IAS generally includes information reported by all ISPs operating in Australia, with more than 1,000 subscribers, as at 30 June and 31 December. At least every three years, the ABS conducts a full census of all Australian ISPs, including those with 1,000 or less subscribers. The last census of all ISPs was conducted in June 2010. The census is conducted as an on-line survey of all ISPs, with ISPs who have 1,000 or less subscribers completing only a subset of questions. The overall contribution of these smaller ISPs was less than 1% of all subscribers for the June 2010 IAS, with minimal contribution to any other data released. This approach to the IAS provides frequent and timely data on key trends while keeping resource usage and provider load to acceptable levels, particularly for smaller ISPs.
5 While mobile wireless internet connections using a datacard, dongle, USB modem or tablet SIM card have been collected by the IAS for some time now, internet connections via a mobile handset were included in the scope of this survey for the first time in December 2009. The data were not released as it was found that providers needed more time to adapt their reporting systems to the new requirements. For the June 2010 IAS, this issue was resolved and the mobile handset data was published in Appendix 1. Since December 2010, data for mobile handsets are reported in the Main Features.
SUBSCRIBERS
6 The ABS counts the number of subscribers that have an internet connection with an ISP on the last day of the reference period. ABS subscriber statistics measure the number of 'subscriber lines' rather than the number of 'users' and therefore, counts of subscribers are not the same as counts of people/organisations with internet access. This is because some subscribers may have accounts with more than one ISP or multiple accounts with a single ISP. Conversely, there are single ISP subscriber accounts that provide internet access for multiple people/organisations (for example, universities).
STATISTICAL UNIT
7 The unit for which statistics are reported in the IAS is the legal entity providing internet access.
8 ISPs in the IAS have been classified by size according to the number of subscribers that ISPs reported at the end of the reference period. The size categories are defined as follows:
| Size of ISP | Definition of Size
( no. of subscribers) |
| Very small ISP | 1-100 |
| Small ISP | 101-1,000 |
| Medium ISP | 1,001-10,000 |
| Large ISP | 10,001-100,000 |
| Very large ISP | 100,001 or more |
REFERENCE PERIOD
9 This release relates to information as at 30 June 2011, except for volume of data downloaded, which is for the three months ended 30 June 2011.
RESPONSE RATE
10 The response rate for the June 2011 IAS was 100%.
IMPUTATION
11 Where data were missing or required clarification, respondents were contacted in the first instance. When necessary, missing data were imputed based on historical data collected.
RELIABILITY OF DATA
12 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:
- errors in the reporting of data by respondents;
- errors in capturing or processing of data;
- estimation for missing or misreported data; and
- definition and classification errors.
13 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. Errors in previous cycles' data are only revised where they have a significant impact on the data released.
14 The volume of data downloaded presented should only be considered as an indicative measure of internet activity during the reference period and therefore should be used with caution.
15 Some ISPs provide proportions in lieu of actual state subscriber numbers. These data therefore has an element of estimation and should be used with caution.
16 Occasionally reporting errors are identified from previous cycles of the IAS and where possible these are revised if they have a significant impact on the data. However in some circumstances, due to a change in the computer system used to process the IAS, the ABS is unable to revise this data. Readers are advised to use these figures with caution.
GLOSSARY
17 A glossary of the terms used in this release can be found under the @ a Glance pages for
Innovation, Science and Technology.
ACKNOWLEDGEMENT
18 The ABS releases 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.
19 In particular, the ABS acknowledges the assistance of the TIO in providing regular lists of registered ISPs.
RELATED RELEASES
20 Other ABS releases on information technology and telecommunications in Australia are:
DATA SOURCE
21 For further details on the Internet Activity Survey please see
Directory of Statistical Sources by Topic.
MORE INFORMATION ON ABS INFORMATION TECHNOLOGY STATISTICS
22 Information about ABS activities in the field of information technology statistics is available from the
Innovation, Science and Technology @ a Glance pages in the ABS website <www.abs.gov.au>.
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