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Line 159: The most common measure of the average estimation accuracy is the MMRE (Mean Magnitude of Relative Error), where the MRE of each estimate is defined as: : {{math\|1=''MRE'' = ~~<math>\frac~~{{sfrac\|~~\text~~{{mabs\|(actual effort}) - ~~\text{~~(estimated effort)}}\|~~}\text{~~(actual effort)}}}}~~</math>~~ This measure has been criticized <ref>{{cite journal

Software development effort estimation: Difference between revisions