HELP

#1
I have a customer who rates the performance of my company process performance based on the data, he gives us the average, LCL and UCL but he finds number of samples out of specs. I would like to know how do tey inteprete such data
 

noetsi

Fortran must die
#2
There are a lot of ways you can analyze this. Do you know what specific measure he is using to determine if it is out of specification? My understanding is that specification limits not UCL/LCL determines if you are in or out of specification. UCL and LCL is used for being in or out of process control.

https://www.whatissixsigma.net/control-limits-vs-specification-limits/

I think you need the standard deviation to do specifications and more information than you mention to do that.
 
#4
There are a lot of ways you can analyze this. Do you know what specific measure he is using to determine if it is out of specification? My understanding is that specification limits not UCL/LCL determines if you are in or out of specification. UCL and LCL is used for being in or out of process control.

https://www.whatissixsigma.net/control-limits-vs-specification-limits/

I think you need the standard deviation to do specifications and more information than you mention to do that.

Hi,
We have average, std, LCL and UCL. We report all the raw data as produced from the process including non-conforming data. The customer gives feedback on number of non conforming tests and number of expected tests.
I need to understand how they come up with expected data by analyzing the data