Precision describes how closely repeated estimates or measurements cluster around their expected value. For individual measurements, variation may be uncontrollable; averaging repeated measurements produces a narrower distribution. section 2.2.1
Comparing execution costs
Aggregating 300 measurements gives ASDAQ 12.0003 and BYSE 10.0511, then repeated trials produce the same ordering. The aggregate standard deviations for sample sizes 3, 30, and 300 are 0.5722, 0.1807, and 0.0581.
