The concentration and HHI reported in the U.S.Bureau of Census must be interpreted with caution since:

Question

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All of the answers are correct. The concentration and HHI reported in the U.S. Bureau of Census must be interpreted with caution since they are calculated by excluding foreign imports, hence they bias upward the degree of concentration; they are based on figures for the entire national market, and the definition of product classes used to define an industry affects the results.

The Concentration and HHI Reported in the U