When is it a recession?

The NBER’s Recession Dating Procedure

Some Insights into Chain Weighting

Here are some articles on why chain weighting is important, and why you can’t interpret economic data without knowing how it was figured.

Using Chain Weighted Data

Alan Young on Chain Weighting – the BEA View

National Association of Manufacturers on Chain Weighting

Process Modeling

Learn business process modeling basics for the analyst
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Process Modeler v0.51a – Freeware Files.com – Business/Organize Category