Alternatives to the Use of Cohen's d; Request for Comment
Primary source
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Issuing agencies
Abstract
The U.S. Department of Commerce (Commerce) seeks information and public comment on how the administering authority can meet the statutory requirement outlined in section 777A(d)(1)(B)(i) of the Tariff Act of 1930, as amended (the Act), to identify if "there is a pattern of export prices (or constructed export prices) for comparable merchandise that differ significantly among purchasers, regions, or periods of time." The U.S. Court of Appeals for the Federal Circuit (Federal Circuit) recently held that it is unreasonable to use the current Cohen's d test when the Cohen's d test is applied to data that do not satisfy the statistical assumptions of normal distribution, equal variances, and sufficiently numerous data. Commerce seeks information and public comment regarding alternatives to the use of the Cohen's d test to define when prices differ significantly among purchasers, regions, and time periods, pursuant to section 777A(d)(1)(B)(i) of the Act.
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