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Small ISP 101 - 1,000 subscribers
Medium ISP 1,001 - 10,000 subscribers
Large ISP 10,001 - 100,000 subscribers
Very large ISP 100,001 + subscribers
10 This release includes information reported by all ISPs operating in Australia as at 31 December 2007. Figures on the volume of data downloaded relate to the three months ending 31 December 2007 as reported by ISPs operating at the end of December 2007.
11 The target response rate for the Internet Activity Survey: December quarter 2007 was 97% for units in the population list, with 100% collection required of identified top contributors. The actual overall response rate achieved was 97%, and 99% for top contributors.
12 The total population for the survey was 438 ISPs. Overall, there were 17 ISPs that did not respond.
13 Where data was missing or required classification respondents were contacted in the first instance. When necessary, missing data was imputed based on historical data collected.
RELIABILITY OF DATA
14 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:
15 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, and appropriate methodology.
16 Download data presented should only be considered as an indicative measure of Internet activity during the reference period and therefore should be used with caution.
17 The number of ISPs reporting to the IAS does not necessarily equal the number of ISPs operating in Australia as at 31 December 2007. 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 counts of ISPs from the IAS to other data sources.
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.
19 In particular, the ABS acknowledges the assistance of the TIO in providing regular lists of registered ISPs.
20 Other ABS publications on information technology and telecommunications in Australia are:
Government Technology, Australia, cat. no. 8119.0
Household Use of Information Technology, Australia, cat. no. 8146.0
Patterns of Internet access in Australia, 2006, cat. no. 8146.0.55.001
Information and Communication Technology, Australia, cat. no. 8126.0
Use of Information Technology on Farms, Australia, cat. no. 8150.0
Summary of IT Use and Innovation in Australian Businesses, cat. no. 8166.0
Selected Characteristics of Australian Business, cat. no. 8167.0
DATA AVAILABLE ON REQUEST
21 As well as the statistics included in this and related publications, the ABS may have other relevant data available on request and for a charge. Inquiries should be made to the National Information and Referral Service on 1300 135 070.
MORE INFORMATION ON ABS INFORMATION TECHNOLOGY STATISTICS
22 Information about ABS activities in the field of information technology statistics is available from the Theme page on the ABS web site via Industry/ Innovation, Science and Technology.
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