Rule · Federal Rules of Evidence
Rule 702. Testimony by Expert Witnesses
Federal Rules of Evidence § 702
- Type
- Rule
- Source
- Federal Rules of Evidence
- Jurisdiction
- Federal
- Date
- 2026-07-10
- Topic
- general
Rule 702. Testimony by Expert Witnesses A witness who is qualified as an expert by knowledge, skill, experience, training, or education may testify in the form of an opinion or otherwise if: (a) the expert's scientific, technical, or other specialized knowledge will help the trier of fact to understand the evidence or to determine a fact in issue; (b) the testimony is based on sufficient facts or data; (c) the testimony is the product of reliable principles and methods; and (d) the expert has reliably applied the principles and methods to the facts of the case. (As amended Apr. 17, 2000, eff. Dec. 1, 2000; amended eff. Dec. 1, 2011.)
Rule702. Testimony by Expert Witnesses
(a) the expert's scientific, technical, or other specialized knowledge will help the trier of fact to understand the evidence or to determine a fact in issue;
(b) the testimony is based on sufficient facts or data;
(c) the testimony is the product of reliable principles and methods; and
(d) the expert has reliably applied the principles and methods to the facts of the case.