Every system has variation. You have to identify if it is a common cause variation or an incident.....

The keys steps :

If you want to be able obtain meaningful and corrects results, any data analyst needs to know how to organize the steps of data analysis :

The end goal is evaluating the capacity to make the right decision in accordance with the customer specifications and requirements.

Things can affect your process with cumulated risks :

 Tool used

 Tool not adapted to

 The operator