Quality Management 2017

A NALYZE

Control chart without limits

S TEP 4: O BSERVE THE PROCESS : BUILD A FIRST CONTROL CHART WITHOUT ANY CONTROL LIMITS (I NDIVIDUAL V ALUE CONTROL CHART ).

 Monitored parameter: mean of throws’ lengths per sample.

Date

Operator Sample # 1st throw 2nd throw 3rd throw 4th throw 5th throw

Comments

Sample mean

03/10/2017 03/10/2017 03/10/2017 03/10/2017 03/10/2017

1 2 3 4 5

#DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!

Use the Excel spreadsheet

Sample number (chronological order)

Mean of throws’ lenghts/sample

03/10/17

15