The methodology behind the Atlanta Fed / Chicago Booth / Stanford Survey of Business Uncertainty (SBU) was revised by the source in August 2020: Changes were made to the panel design, the survey questions asked, and the series produced. Because of these changes, FRED has discontinued the existing indices and added four new smoothed indices of business uncertainty and expectations.
See the SBU’s revised methodology for more details on changes to the survey and the series.
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