The National Association of Purchasing Management has become the Institute for Supply Management™. Please be aware that NAPM.org is now ISM.ws.
FOR RELEASE: January 25, 2006
| Contact: |
Rose Marie Goupil |
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ISM, Media Relations |
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Tempe, Arizona |
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800/888-6276, ext. 3015 |
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rgoupil@ism.ws |
U.S. Department Of Commerce Makes Annual Adjustments
to Seasonal Factors for ISM Manufacturing PMI and Diffusion Indexes
and ISM Non-Manufacturing Diffusion Indexes
(Tempe, Arizona) — The U.S. Department of Commerce recently completed its annual adjustment to the seasonal factors used in the monthly Institute for Supply Management™(ISM) Manufacturing Report On Business® and the monthly Institute for Supply Management™ (ISM) Non-Manufacturing Report On Business®. Economists and managers who track these indexes will note these changes are effective with the January 2006 ISM Manufacturing Report On Business®, which is scheduled to be released on February 1, 2006 and the January 2006 ISM Non-Manufacturing Report on Business®, which will be released on February 3, 2006.
Seasonal adjustment factors are used to allow for the effects of repetitive intra-year variations resulting primarily from normal differences in weather conditions, various institutional arrangements, and differences attributable to non-movable holidays. It is standard practice to project the seasonal adjustment factors used to calculate the indexes a year ahead (2006).
The X12-ARIMA program was used to develop the revisions to the indexes for 2002 through 2005 as well as the 2006 projected seasonal factors for Manufacturing. Due to the shorter history for the Non-Manufacturing Report, these indexes have been revised from 1997 through 2005. The 2006 seasonal factors will be recomputed when the actual data are known in early 2007. Projected seasonal factors for 2006 are listed on the next page. Revised indexes for all other indicators are shown on pages 3 through 6, followed by charts tracking both the former and the revised PMI and Business Activity Index for Non-Manufacturing on page 7.
As part of the Department of Commerce's annual review, the Manufacturing Imports series will no longer be seasonally adjusted, effective with the January 2006 seasonal adjustments.
Click here to view the Seasonal Adjustment Tables.
Click here to view the entire release including the Seasonal Adjustment Tables in PDF format.
Click here to view the Comparison of Previous Numbers to current 2006 revisions in Excel format.
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