I want to generate a X bar chart with control limits, sample size is Fix- 1.
SPC criterion I selected is 020 ie Task List characteristics/ Material.
1)Sampling Procedure I used- Fixed-1
2)Valuation mode I used- Attrib non conforming units/ manual.
3)Control chart I am using is 110- Shewart chart for X bar.
But when I click for control limits in chart it is saying control limits for track 1 could not be calculated.
Could anyone guide me, how to generate control limits for this graph. Sammple size will alwyas be 1.
Please let me know should I change control chart type in this case.