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Are PPIs seasonally adjusted?

April 26, 2017Adjusted ppis Seasonally

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Are PPIs seasonally adjusted?

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Because PPI data are used for different purposes, BLS publishes seasonally adjusted as well as unadjusted changes each month. Certain 4-digit and 6-digit commodity series are selected for seasonal adjustment if statistical tests indicate seasonality and if there is an economic rationale for the observed seasonality. Indexes for most 2-digit commodity groupings and 8-digit individual commodities, as well as industry and Census product indexes, are published only as unadjusted data.