The main purpose of the CE diagram is to graphically represent the relationship between an effect and its various possible causes. The main steps in drawing a cause-effect diagram are as follows:-
(1) Clearly define the problem (the effect) to be studied. Here we can find the problems of particular types that are occurring in the system.
(2) We draw an arrow from left to right with a box containing the effect drawn at the head. This is the backbone of the diagram.
(3) We determine the major categories of causes. These could be the standard categories or some variation to suit the problem.
(4) We then write these major categories in boxes and connect them with diagonal arrows to the backbone.
(5) Then Brainstorm for the sub-causes of the major causes by asking repeatedly for each major cause “Why does this major cause produce the effect”?
(6) Then we add the sub-causes to the diagram clustered around the major cause. If necessary further we subdivided these causes & stop when no worthwhile answer to the question can be found.
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