Thank you for your valuable comments and appreciation! 🙏☺️ For complete Green Belt training and guidance on ASQ Examination, please visit vijaysabale.co/lssgb
Can you please explain me why do you calculate the Cpl and Cpu from the "Target for the process" (5:30) instead of the mean? Also can you please explain what Short-Term Standard Deviation is?
These are the formulae for Cpl and Cpu. Short-term standard deviation is considering only common cause variation in the process, calculated by using formula Rbar/d2.
Normal Capability Analysis and Normal Capability Sixpack are commonly used in Capability Analysis. Whereas, in Hypothesis test t test are commonly used. But, please remember, depending on scenario, you have to use correct type of analysis or test..
Hi I have a question. Let's say that management wants to bring down % defective from 5% to 2% to improve the process and increase customer satisfaction. Can we calculate cpk in this case on the np chart, considering that management would set a maximum tolerance limit?
Yes, you can. But the monitoring of it won't be effective. For Process Performance and Process Capability, you need all indices along with a graphical representation. You can either have a system to calculate Process Performance regularly or start using a P chart to monitor proportion defectives.
@@learnandapply thank you. If we plot a p chart and include a maximum spec of 2% we should be good to go with also calculating the capability though. Is it not correct?
Ok, how can you calculate capability from control charts? Can you please elaborate? The intent of control charts is to control your process by identifying and elimination special causes.
@@learnandapply control charts and capability have different purpose, but technically we need control chart to calculate cpk. In cpk formula we have mean and standard deviation. They are both contained in control chart as it gives us all the info about the process. We often see specs as coming from external customer, but technically internal customer(departments, management) may give some spec to things like cycle time, procurement time, ppm. Statistically calculating capability on these things would make sense, although pratically we don't see that often. I like receiving feedback from valuable channels like yours, that's why I wrote.
Yes, we need Rbar/d2 for calculating short-term capability. The question was different. I appreciate your thought process and active involvement. Thank you so much for being a part of LEARN & APPLY.
If the process is out of control, then whatever capability you are going to calculate is not correct and not consistent. Actually, there is no meaning of calculating capability, if the process is out of control.
Cp won't be there, but use the formula for Cpk based on the specification limit (Higher or Lower). E.g. If you had specified the USL, then use the Cpk Upper formula.
Thank you for your valuable question. This is because it is an optimized level considering cost, efforts, and results? Please check out my detailed video on this topic: ua-cam.com/video/gNjr6xFl3kM/v-deo.html
In that case, you need to identify which distribution fits your data by using 'Individual Distribution Identification'. Once you found out the distribution in your data, please use the nonnormal distribution option and select that distribution in the options. You can also go for the transformation of data to fit the normal distribution.
Excellent content. Thank you for laying it out in a clear, visual and easy to absorb manner. Very nice. More like this please.
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Wow. I understand it more better this time
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Best 6 Sigma faculty in you tube
Sir is your lecture sufficient to crack the ASQ green belt exam ?
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For complete Green Belt training and guidance on ASQ Examination, please visit vijaysabale.co/lssgb
SUPER JOB!!!! Congratulations!!!!
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Very clearly explained - for some reason I had a block on understanding CP and CPK. This explained it all very well and more.
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Excellant
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Amazing video sir and presentation is also too Good 👍👍👍 keep it up
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Excellent explanation ❤
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Thank you 🙏🙏👍 sir
You're welcome!
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Thank you very much 😊❤
You're welcome!
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Thank you for sharing.
Your welcome and thank you so much for your valuable comments!
How do you do a Process Capability Study for one sided specifications limits (example: measurement of flatness tolerance on a part)?
The procedure is the same. Just to mention only one side specification limits in the options during performing it.
Well done. Excellent presentation.
Thank you for your valuable comments...
supper explanation
Thank you so much Dinesh for your valuable comments 🙏☺
Can you please explain me why do you calculate the Cpl and Cpu from the "Target for the process" (5:30) instead of the mean?
Also can you please explain what Short-Term Standard Deviation is?
These are the formulae for Cpl and Cpu.
Short-term standard deviation is considering only common cause variation in the process, calculated by using formula Rbar/d2.
Sir please tell which are the common test used on process cabality and hypothesis....
Normal Capability Analysis and Normal Capability Sixpack are commonly used in Capability Analysis.
Whereas, in Hypothesis test t test are commonly used.
But, please remember, depending on scenario, you have to use correct type of analysis or test..
Good
Thank you for your valuable comments..
「あなたの動画はとても良いですし、メッセージがた
Thank you so much for your valuable comments and appreciation 😊🙏
Hi I have a question. Let's say that management wants to bring down % defective from 5% to 2% to improve the process and increase customer satisfaction. Can we calculate cpk in this case on the np chart, considering that management would set a maximum tolerance limit?
Yes, you can. But the monitoring of it won't be effective.
For Process Performance and Process Capability, you need all indices along with a graphical representation.
You can either have a system to calculate Process Performance regularly or start using a P chart to monitor proportion defectives.
@@learnandapply thank you. If we plot a p chart and include a maximum spec of 2% we should be good to go with also calculating the capability though. Is it not correct?
Ok, how can you calculate capability from control charts? Can you please elaborate?
The intent of control charts is to control your process by identifying and elimination special causes.
@@learnandapply control charts and capability have different purpose, but technically we need control chart to calculate cpk. In cpk formula we have mean and standard deviation. They are both contained in control chart as it gives us all the info about the process. We often see specs as coming from external customer, but technically internal customer(departments, management) may give some spec to things like cycle time, procurement time, ppm. Statistically calculating capability on these things would make sense, although pratically we don't see that often. I like receiving feedback from valuable channels like yours, that's why I wrote.
Yes, we need Rbar/d2 for calculating short-term capability. The question was different.
I appreciate your thought process and active involvement.
Thank you so much for being a part of LEARN & APPLY.
If the process is out of control, how to do the capability?
If the process is out of control, then whatever capability you are going to calculate is not correct and not consistent.
Actually, there is no meaning of calculating capability, if the process is out of control.
How to calculate Cp Cpk for one side specification?
Cp won't be there, but use the formula for Cpk based on the specification limit (Higher or Lower).
E.g. If you had specified the USL, then use the Cpk Upper formula.
Hi sir,
CPm Value for good process
Cpm value more than 1.33 is a good value.
any reason why we go for 6sigma rather than lower or higher?
Thank you for your valuable question. This is because it is an optimized level considering cost, efforts, and results?
Please check out my detailed video on this topic:
ua-cam.com/video/gNjr6xFl3kM/v-deo.html
What if the data I had does not follow normal distribution ?
In that case, you need to identify which distribution fits your data by using 'Individual Distribution Identification'.
Once you found out the distribution in your data, please use the nonnormal distribution option and select that distribution in the options.
You can also go for the transformation of data to fit the normal distribution.
@@learnandapply
Thank you so much!
Your welcome!
We are having detailed videos on each of these topics in this channel as well!
If CPK is one sided and the process works, I should move the mean?
Can you please elaborate more on it?
Cpk is very much bottom of the control limit but the process works
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