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SURVEY SAMPLE DESIGN
The following dwellings were excluded:
§ unoccupied private dwellings
§ non-private dwellings such as hospitals, hotels, motels and prisons
The following people were excluded:
§ persons aged under 18 years
§ members of the permanent defence forces
§ certain diplomatic personnel of overseas governments, customarily excluded from censuses and surveys
§ overseas residents in Australia
§ members of non-Australian defence forces (and their dependents)
§ those who were visitors to a private dwelling
§ those who did not have a resident parent/guardian in the household
§ those in very remote Indigenous Community Frame (ICF) Collection Districts (CD)
6 The survey was conducted in both urban and rural areas throughout Victoria, and excluded people living in very remote areas who would otherwise have been within the scope of the survey. The exclusion of these people had only a minor impact on any aggregate estimates.
7 Melbourne's public transport network is divided into two main Metropolitan Public Transport Zones. The geographic scope and detail of the public transport tables has been limited to CDs within Melbourne Metropolitan Public Transport Zones 1 and 2. Areas beyond the Melbourne Major Statistical Region were outside the scope of the public transport tables. CDs were aligned to the Metropolitan Public Transport Zone which had the majority of the area within that CD. CDs which were mostly in the Metropolitan Public Transport Zone boundary overlap (where stations and stops can be used as either Zone 1 or Zone 2) were aligned to Zone 1 on the presumption that most public transport travel is to and from the city centre, and as such, people in these CDs were more likely to have purchased a Zone 1 ticket. CDs outside Zone 2 but within the Melbourne Major Statistical Region were excluded from the public transport tables.
8 Coverage rules were applied to ensure that each person was associated with only one dwelling, and hence had only one chance of selection in the survey.
9 Information was sought from 5,143 people in Victoria and a full response was collected from 4,624 (89.9%).
10 Information was collected by either a face-to-face or telephone interview conducted over a two-week period during October 2011. Information was collected from any responsible adult in the household aged 18 years and over, who was asked to respond on behalf of the household for the water and energy use topics and for a randomly selected person in the household for the public transport use topic.
11 Data was collected on the number of persons in the household. This includes all children (aged under 18 years) within the household plus the number of adults in the scope of the Labour Force Survey.
12 The reference period for most tables within the data cubes is October 2011. The exceptions were :
§ In the Data Cube for Public Transport: Tables 1a, 1b, 2a, 2b, 4a and 4b - the reference period is the month prior to October 2011.
§ In the Data Cube for Energy: Tables 16a and 16b - the reference period is the month prior to October 2011.
§ In the Data Cube for Energy: Tables 4a, 4b, 7a, 7b, 8a, 8b, 11a, 11b, 12a and 12b - the reference period is the 12 months prior to October 2011.
EFFECTS OF ROUNDING
13 Estimates have been rounded, and discrepancies may occur between sums of the component items and totals.
EQUIVALISED WEEKLY HOUSEHOLD INCOME
16 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).
17 The ABS has been conducting surveys related to the topic of Household Water and Energy Use on an irregular basis. Previous ABS surveys related to Household Water and Energy Use used a variety of sampling methods, estimation methods, concepts, data item definitions and classifications. These include:
The ABS produces a wide range of publications relating to demographic, housing, environment and transport statistics. Current publications and other products released by the ABS are available from the Statistics View. The ABS also issues a daily Release Advice on the ABS website www.abs.gov.au which details products to be released in the week ahead.
18 The Household Water and Energy Use survey is not part of the ongoing ABS MPS program. Extreme caution must be used when comparing the 2011 survey with other related publications as differences in scope and methodology exist.
DATA AVAILABLE ON REQUEST
19 Inquiries about these statistics and more detailed statistics than those presented in the publication should be made by contacting the National Information and Referral Service on 1300 135 070 or Halley Coldicott in Melbourne on (03) 9615 7772.
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