What is the test for abuse of discretion when it comes to the exclusion of expert testimony?

We review "the district courts exclusion of expert testimony" for abuse of discretion. United States v. Christian , 749 F.3d 806, 810 (9th Cir. 2014). We first "consider whether the district court identified the correct legal standard for decision

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of the issue before it" and then we "determine whether the district courts findings of fact, and its application of those findings of fact to the correct legal standard, were illogical, implausible, or without support in inferences that may be drawn from facts in the record." United States v. Hinkson , 585 F.3d 1247, 1251 (9th Cir. 2009) (en banc).