How does fish bone diagram method helps to improve quality or a Organisation..?

Its a problem solving technique. it gives you the root cause of problem so you can avoid its reoccurance  in the future. beside it enhance brainstorimng and people involevement. all the possible causes are written down in an easy way for everybody to see.

once you have all the possible causes, then you can think how can you elimenate the problem with the least resources and effort (sometimes).

i.e. where you should invest your effort for optimal solution