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It permits investors to assess the quality of their executions by comparing the price their broker offers to the marketplace 's best price . Executive Order 12866 requires agencies to assess the costs and benefits of available regulatory alternatives , and when regulation is necessary , to select regulatory approaches that maximize net benefits ( including potential economic , environmental , public health and safety effects ; distributive impacts ; and equity ) . Allows teachers to assess the critical reading abilities of children and adolescents . The appendix also includes a discussion on the methodology used to produce the survey estimates , and a table of standard errors which enables users to assess the degree of precision of the estimates given in the body of the report .