5.6.7.3 Foundation and Bases of Opinion—Arizona and Federal Rule 703

• Jurisdiction: Arizona

Under Federal Rule 703, there are three types of foundational information that may support the expert’s opinion: (1) the expert may have first-hand knowledge, as when she conducts testing; (2) the facts may be presented at trial through the use of a hypothetical question or by having the expert observe the testimony; and (3) the expert may be given data outside the court upon which opinions are formed. Further, Rule 703 allows the expert to rely on outside data that would not be admissible into evidence...