6302.0 - Average Weekly Earnings, Australia, Aug 2005
ARCHIVED ISSUE Released at 11:30 AM (CANBERRA TIME) 17/11/2005
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NOTES ON ESTIMATES
CONCURRENT SEASONAL ADJUSTMENT
The ABS has introduced concurrent seasonal adjustment to the Survey of Average Weekly Earnings (AWE), replacing the forward factor adjustment method previously used to produce seasonally adjusted estimates. Concurrent seasonal adjustment uses original data up to and including the current quarter to update seasonal factors each quarter, whereas the forward factor adjustment method only updates seasonal factors annually.
By increasing the frequency of seasonal reanalyses from annually to quarterly, concurrent seasonal adjustment produces initial seasonally adjusted estimates that are closer on average to their final values, as any changes in seasonality are picked up sooner. See paragraphs 27 to 30 of the Explanatory Notes for more information on the concurrent seasonal adjustment method.
Movements in average weekly earnings can be affected by both changes in the level of earnings per employee and changes in the composition of the labour force. For example, changes in the proportions of full-time, part-time, casual and junior employees and variations in the distribution of occupations can affect movements in earnings series. Refer to paragraphs 18 and 19 of the Explanatory Notes.
For information on sampling error refer to the Technical Note. Standard errors for the original estimates contained in this publication are in tables 18 to 20.
For further information about these and related statistics, contact the National Information and Referral Service on 1300 135 070 or Manpreet Singh on Perth (08) 9360 5304.
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