§ 1.482-1(e)(2)(iii)(B) Adjustment of range to increase reliability.

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If there are no uncontrolled comparables described in paragraph (e)(2)(iii)(A) of this section, the arm’s length range is derived from the results of all the uncontrolled comparables, selected pursuant to paragraph (e)(2)(ii) of this section, that achieve a similar level of comparability and reliability. In such cases the reliability of the analysis must be increased, where it is possible to do so, by adjusting the range through application of a valid statistical method to the results of all of the uncontrolled comparables so selected. The reliability of the analysis is increased when statistical methods are used to establish a range of results in which the limits of the range will be determined such that there is a 75 percent probability of a result falling above the lower end of the range and a 75 percent probability of a result falling below the upper end of the range. The interquartile range ordinarily provides an acceptable measure of this range; however a different statistical method may be applied if it provides a more reliable measure.

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