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The weighting methodology used in the LFS requires a respondent in each of the above benchmarks. An investigation was undertaken to determine the likelihood of no respondents in any of the above benchmarks, given the reduced sample size which will be in place from July 2008.
This investigation found that given the reduced sample size, there would be a high chance of this occurring in the single year age groups (i.e. 15 to 24 years) for balance of South Australia, balance of Western Australia and the city of Hobart. For this reason the ABS has decided to combine some age groups in these areas to significantly lower the likelihood of having no respondents for these groups.
The collapsing of age groups will mean:
There will be no other changes to the benchmarks used for other States or Territories or to the age groups used for those aged 25 and above.
The ABS currently releases some products with single year of age data for those aged 15 to 24 years old. The ABS will continue to release all products which contain single year of age data. The quality of these data will be slightly reduced due to the single year of age data no longer being benchmarked in all areas.
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