When tabulating data in TableBuilder, person weights are automatically applied to the underlying sample counts. Weighting is the process of adjusting results from a sample survey to infer results for the total population. To do this, a 'weight' is allocated to each sample unit. The weight is the value that indicates how many population units are represented by the sample unit.
There are three weights on the file:
- Household weight PAA - benchmarked to produce Aboriginal and Torres Strait Islander household estimates.
- Person weight PAA - benchmarked to the total Aboriginal and Torres Strait Islander population.
- Hearing test weight - must be used whenever an item is used from the hearing level.
When analysing a Household level item, you may want to change the summation weight from persons to households. For example, if you wanted to know the number of households in a state rather than the number of persons living in that state. In this case, you would add the weight called 'Household weight PAA' from the Summation Options heading. The default weight is 'Person weight PAA' - a count of persons.
The weighted counts for the selected person and the hearing level are the same, which is because only a maximum of one hearing test was counted for each person. When analysing any item from the Hearing level, you must use the 'Hearing test weight'. You would add the weight called 'Hearing' from the Summation Options heading. If the correct weight is not used, the errors associated with the data will be incorrect.