what u said about p value is cent present correct but eg; u have given coin head and tail is has some other meaning i thing sir 1st tail means poo ie flower is for humane part goes to nose of smell of psycology of humane whether he says truth or not for eg:: after casting vote in election no one will say the truth but v can get truth with the statistics calculation.of significance or insignificance.
If LCL is outside LSL, either the process is shifted or the spread is too high. Since UCL is okay, you can understand that the process is shifted to the left side. Hence find out the reasons for the shift first. Take actions to fix it. Afterwards check whether variation must be further reduced? You must do this if Cp remains unacceptable even after correcting the shift. Hope it helps. Explore our courses to develop a comprehensive understanding on the subject visionexcellence.in/courses/
And sr if this shift is in testing results that we cannot change then it is ok to have such variation and if results is in yield then we have to correct or take actions to improve process by minimising waste.
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As per AIAG guidelines, Gage R&R must be less than 10%, which means overall Bias must be less than 10%. This directly indicates the risk of your decisions going wrong even after referring to the data. Hence lower the bias, lower the risk, better are your decisions. Hope it helps.
Good Evening Sir Though i am not directly your student but i learn so many things from you i must say i am your big fan of teaching and the way you tech your students it is absolutely remarkable Thank you sir Regards Sandeep kumar
In my View, you cannot say co/cpk and short term process capability or Pp/Ppk as long term capability just based on formulas or calculation of sigma....... short term and long term study is depend on how and how much data you have collected......lets example I collected the data from 1 shift production and I do capability study it will be only short term capability.....weather I do Cpk or Ppk calculation......... If I collect the data from.a longer period covering variation of different shifts, m/c run by different operator, Data with change of raw material batch......now compile the data covering all variation and then do the capability study it will be treated long term Process capability, here working on 4 sigma level i.e Cpk tgt 1.33 is acceptable.........while in previous case target should be 1.67 we supposed variation in collected sample is not covering all variation hence production should be run at 5 Sigma level i.e. for short term data process capability target 1.67.... Your views on this.... long term and short term is depend on which type of data I am doing capability analysis.....
Hi thanks for sharing your views. The data collection period is dependent on prevailing constraints. But you can get an estimate of Cp Cpk & Pp Ppk using data collected over any period. The period of data collection is part of your data collection plan. But once data is collected you can calculate both capability and performance measures. The more the data and more the data collection period, the better your estimates will be. Cheers. Dr.GSK.
Hi Vignesh, selecting samples in subgroups is good..sample size may vary from 2 to 25. Proper understanding of the requirement is vital to decide on sample size and number of subgroups
Sir I very much like to learn six Sigma green belt certification program from you.... but I couldn't find the right registration link for the same anywhere. Please can you tell me where to register.... thankyou
