Abstract
This paper presents a method to calculate the dispersion of production efficiency in automatic assembling lines. The method is based upon considerations for the fundamental element and the proper sampling time on the line proposed previously. The paper purposes to be informed a measure of dispersion in the production efficiency by days. Main results reported in this paper are as follows : (1) Relative frequencies calculated by the method take good agreements of simulated ones. (2) Dispersion increases with the cycle time of the line in the same running time. (3) Dispersion is influenced by the ratio of the recovery time at troubles and the intermediate buffuer volume.
