Editing Ishikawa diagram (section)

===The 4 or 5 Ss (used in service industries)===
An alternative used for service industries, uses four categories of possible cause:<ref>{{Cite book|title=Handbook of Lean Manufacturing in the Food Industry|last=Dudbridge|first=Michael|date=2011|publisher=John Wiley & Sons|isbn=978-1444393118|oclc=904826764}}</ref> 
*Surroundings: Refers to the environment in which the process occurs.
*Suppliers: Refers to external parties that provide inputs—raw materials, components, or services.
*Systems: Refers to the procedures, processes, and technologies used to perform the work.
*Skill: Refers to the human factor, particularly the knowledge and abilities of employees.
*Safety: Refers to physical and psychological well-being in the workplace.