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6202.0 - Labour Force, Australia, Jan 2004  
Previous ISSUE Released at 11:30 AM (CANBERRA TIME) 12/02/2004   
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What If...? Revisions to Trend Estimates


Effect of new seasonally adjusted estimates on trend estimates


TREND REVISIONS

Each time new seasonally adjusted estimates become available, trend estimates are revised. This revision is a combined result of the concurrent seasonal adjustment process and the application of surrogates of the Henderson average to the seasonally adjusted series (see paragraphs 17 to 23 of Explanatory Notes).


The examples in the tables below show two illustrative scenarios and the consequent revisions to previous trend estimates of employment and the unemployment rate. The revisions in the scenarios below are only due to the use of surrogates of the Henderson average, as the impact of revision of the seasonally adjusted estimates can not be estimated in advance.

(1) The February seasonally adjusted estimate is higher than the January estimate by:

    • 0.27% for employment
    • 1.80% for the unemployment rate

(2) The February seasonally adjusted estimate is lower than the January estimate by:
    • 0.27% for employment
    • 1.80% for the unemployment rate


The percentage changes of 0.27% and 1.80% were chosen because they represent the average absolute monthly percentage changes in employment and the unemployment rate respectively.


Employment

Graph: What_if_what if emp graph

WHAT IF NEXT MONTH'S SEASONALLY ADJUSTED ESTIMATE IS:
Trend as published
(1) 9704.4 i.e. rises by 0.27%
(2) 9652.2 i.e. falls by 0.27%

2003
October
9,597.7
9,597.2
9,598.1
November
9,629.0
9,630.0
9,627.6
December
9,656.6
9,658.6
9,650.8
2004
January
9,679.7
9,682.9
9,668.3


Unemployment Rate
Graph: What_if_what if unemp graph

WHAT IF NEXT MONTH'S SEASONALLY ADJUSTED ESTIMATE IS:
Trend as published
(1) 5.8 i.e. rises by 1.80%
(2) 5.6 i.e. falls by 1.80%

2003
October
5.7
5.7
5.7
November
5.7
5.7
5.7
December
5.6
5.7
5.6
2004
January
5.6
5.7
5.6


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