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Tagged: SPC

This topic contains 4 replies, has 2 voices, and was last updated by John Wick 9 months, 2 weeks ago.

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- February 1, 2018 at 6:50 am #702395February 1, 2018 at 9:36 am #702416
Have you searched this site or used google? Lots of calculations out there for limits and as long as you can divide by 3….should answer your question.

https://www.moresteam.com/toolbox/statistical-process-control-spc.cfm

February 1, 2018 at 1:00 pm #702436I know how to calculate the UCL and LCL,

so if im getting this correctly

lets say i have an

X (average); 7.967

USL;9.3518

LSL ; 6.5822so…

USL – Xbar 3 ? thats how i get every sigma?

9.3518-7.976 = 1.3848

then divided by 3 is = 0.4616then 1σ is = 8.4286

2σ = 8.8902

3σ = 9.3518Am i right?

February 1, 2018 at 1:03 pm #702438You mean UCL and LCL? if so….yes but follow the formulas to calculate the limits.

February 1, 2018 at 1:23 pm #702439yeah sorry UCL and LCL

Correct! , yeah the UCL and LCL were calculated with formulas. - AuthorPosts

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