Abstract
In this paper, the graphical modelling is applied to process analysis of a parts manufacturing. This production line is composed of some elementary processes which are connected in series. The obtained multivariate data for the analysis are characteristics of the product from each of the elementary processes. By means of the exploratory casual analysis between the variables using the graphical modelling, neck elementary processes for a final characteristic of the parts can be identified and a hypothesis on the mechanism which causes the variation of the final characteristic can be created. In addition, the application of the graphical of the multiple regression analysis.
