The accuracy of comparative estimating

Abstract

Economic work measurement can now be successfully achieved in many areas by the integrated use of the various systems in the M.T.M. family. A related area is that of comparative estimating in which jobs are allocated by the planner to a time interval and then assigned the single time associated with that interval. This paper examines two different methods of time (distance) interval selection— one from each area, and discusses the implications of these different bases on managerial decision making. It is suggested that in practice comparative estimating may have much to offer, and the paper concludes with comments on planner estimation error, showing that there appears to be a unique best solution for any particular environment, although this may be insensitive near the optimum.

Additional information

Notes on contributors

J. H. FAIRHURST

Now with the Department of Education and Science