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Jymze

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Posted 26 May 2018 - 09:50 AM

How can product quality assessment be represented statistically? E.g, out of 8 pallets of a particular product produced in an 8 hours shift, how can the quality of this product be represented statistically? 



mohamed ahmed yusuf

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Posted 27 May 2018 - 09:11 AM

Hello James, 

Would you mention one measure that you looking for in your product such like moisture , color or anything else ? 


M.Yusuf


redfox

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Posted 28 May 2018 - 06:47 AM

Hello James,

 

 

Please see attached files on sampling plan. It may help.

 

regards,

redfox

 

Attached File  Sample Size Chart_ ifsqn2.pdf   66.55KB   36 downloads

Attached File  Sample Size for Zero Nonconforming Items.pdf   170.24KB   44 downloads

Attached File  Sample Size_ifsqn1.pdf   317.82KB   34 downloads

Attached File  The Special Inspection Levels in the AQL Tables_ifsqn3.docx   89.63KB   36 downloads



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Gerard H.

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Posted 28 May 2018 - 08:01 AM

Dear James,

 

It's important to make clear definitions, before applying statistical analyses:

  • Your process needs to be controlled and it's necessary to know what parameters are already measured
  • The quality of the particular product has to be well defined
  • The product sampling method needs to be well described (and followed)

Kind regards,

 

Gerard Heerkens



Charles.C

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Posted 29 May 2018 - 09:56 AM

How can product quality assessment be represented statistically? E.g, out of 8 pallets of a particular product produced in an 8 hours shift, how can the quality of this product be represented statistically? 

 

I interpret "represent" as "estimate". I assume a random sample.
 

The simplest answer is by the Average Value plus  a confidence level.

 

Not so easy if it's smell of course. :smile:

 

Also see this post whose middle file has many examples of "quality" -

 

http://www.ifsqn.com...ng/#entry126033


Kind Regards,

 

Charles.C




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