U.S. flag

An official website of the United States government, Department of Justice.

Principles and Practices


BJS adheres to and is guided by a well-established set of principles and practices followed by the federal statistical community. These principles and practices ensure the public has access to credible, trustworthy data and statistics on meaningful and timely criminal justice topics that are independent of undue external influence. 

Principles and Practices for a Federal Statistical Agency

Statistical agency decisions—managerial, programmatic, and technical—are guided by four well-established and fundamental principles:

  • Principle 1: Relevance to Policy Issues A statistical agency must provide objective, accurate, and timely information that is relevant to issues of public policy and useful to a broad range of public- and private-sector users as well as to the public. To establish priorities for its programs, a statistical agency must not only work closely with the executive branch and Congress, but also engage users from state and local governments, businesses, academia, and nongovernmental groups. Interaction with stakeholders is essential to enable a statistical agency to continually reassess the information needs of its users.
  • Principle 2: Credibility among Data Users Because few data users are in a position to verify the completeness and accuracy of statistical information, they must rely on an agency’s reputation as a source of quality work that is free from political and other undue external influence. An agency builds credibility by widely disseminating its data in easy-to-use and accessible ways on an equal basis to all users. Also essential to building credibility are for an agency to be open and transparent about its data sources and their limitations, demonstrate understanding of users’ needs and priorities, fully document the processes used to produce and disseminate statistical products, and take proactive steps to preserve data for future use.
  • Principle 3: Trust among Data Providers Data providers, such as survey respondents or custodians of administrative records, must be able to trust that the information they provide to a statistical agency will be used only for the purposes that the agency has described. In particular, data providers must trust that information collected from them for statistical purposes will not be used for any other purpose, such as law enforcement or regulation, that could affect a specific individual or organization. Data providers must also be able to trust that a statistical agency will honor its pledges to protect the confidentiality of their responses and safeguard individual records against unauthorized attempts to gain access. A statistical agency further earns the trust of data providers and respects their privacy and autonomy through minimizing the intrusiveness of questions and the time and effort needed to respond to information requests, and through informing providers of the importance of the information, the expected time required to participate in the data collection, and whether the collection is mandatory or voluntary.
  • Principle 4: Independence from Political and Other Undue External Influence To be credible, trustworthy, and unhindered in its mission, a statistical agency must maintain a position of independence from undue external influences (even as it proactively seeks input on its program and priorities). It must avoid even the appearance that its collection, analysis, or dissemination processes might be manipulated for political or partisan purposes or that individually identifiable data collected under a pledge of confidentiality might be turned over for administrative, regulatory, or law enforcement uses. Protection from undue outside influences requires that a statistical agency have authority for professional decisions on its programs, including authority over the selection and promotion of staff; the processing, secure storage, and maintenance of data; and the timing and content of data releases, accompanying press releases, and documentation. The credibility that comes from independence is essential for users to maintain confidence in the accuracy and objectivity of a statistical agency’s data and for data providers to be willing to cooperate with agency requests.

Thirteen practices are critical for the effective, principled operation of a statistical agency:

  1. a clearly defined and well-accepted mission,
  2. necessary authority to protect independence,
  3. use of multiple data sources for statistics that meet user needs,
  4. openness about sources and limitations of the data provided,
  5. wide dissemination of accessible and easy-to-use data,
  6. cooperation with data users,
  7. respect for the privacy and autonomy of data providers,
  8. protection of the confidentiality of data providers’ information,
  9. commitment to quality and professional standards of practice,
  10. an active research program,
  11. professional advancement of staff,
  12. a strong internal and external evaluation program, and
  13. coordination and collaboration with other statistical agencies.

By adhering to the principles and following the practices, a federal statistical agency will be well-positioned to provide the relevant, accurate, timely, credible, and trustworthy statistical information that policymakers and the public require.

For more information, see Principles and Practices for a Federal Statistical Agency

Date Created: May 13, 2021