If the results of a controlled transaction fall outside the arm’s length range, the district director may make allocations that adjust the controlled taxpayer’s result to any point within the arm’s length range. If the interquartile range is used to determine the arm’s length range, such adjustment will ordinarily be to the median of all the results. The median is the 50th percentile of the results, which is determined in a manner analogous to that described in paragraph (e)(2)(iii)(C) of this section (Interquartile range). In other cases, an adjustment normally will be made to the arithmetic mean of all the results. See § 1.482-1(f)(2)(iii)(D) for determination of an adjustment when a controlled taxpayer’s result for a multiple year period falls outside an arm’s length range consisting of the average results of uncontrolled comparables over the same period ...
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