should x-axis data be used as time stamp data why is it appropriate to use time stamp data in a control chart what structure for control charts is suitable? when to use x axis when to use time stamps on x axis chart why is x axis of shewhart chart when using control charts what axis do they use time stamped data on? when to use x-axis in control chart when using x axis on control charts what axis does shewhart charting use what structure is a control chart what controls the x axis do we use time stamped data on the x axis? when are time stamps appropriate why do you use the x axis in a control chart when can you use x axis in a control chart which direction should a shewhart control chart be set for when should shewhart chart be used? which of the following is an example of a control chart structure? when to use time stamped data on x axis in shewhart control chart