The U.S. Department of Commerce publishes a series of census documents referred to as Current Industrial Reports. Included in these documents are the manufacturers’ shipments, inventories, and orders...


The U.S. Department of Commerce publishes a series of census documents referred to as Current Industrial Reports. Included in these documents are the manufacturers’ shipments, inventories, and orders over a 5-year period. Displayed here is a portion of these data representing the shipments of chemicals and allied products from January of year 1 through December of year 5. Use time-series decomposition methods to develop the seasonal indexes for these data.






















































































































































































Chemicals





Chemicals





and Allied





and Allied





Products





Products



Time Period



($ billion)



Time Period



($ billion)



January (year 1)



23.701



January (year 2)



23.347



February



24.189



February



24.122



March



24.200



March



25.282



April



24.971



April



25.426











May



24.560



May



25.185



June



24.992



June



26.486



July



22.566



July



24.088



August



24.037



August



24.672



September



25.047



September



26.072



October



24.115



October



24.328



November



23.034



November



23.826



December



22.590



December



24.373



January (year 3)



24.207



January (year 4)



25.316



February



25.772



February



26.435



March



27.591



March



29.346



April



26.958



April



28.983



May



25.920



May



28.424



June



28.460



June



30.149



July



24.821



July



26.746



August



25.560



August



28.966



September



27.218



September



30.783



October



25.650



October



28.594



November



25.589



November



28.762



December



25.370



December



29.018










































































Chemicals





and Allied





Products



Time Period



($ billion)



January (year 5)



28.931



February



30.456



March



32.372



April



30.905



May



30.743



June



32.794



July



29.342



August



30.765



September



31.637



October



30.206



November



30.842



December



31.090


May 20, 2022
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