amazing job, you made the life of GR&R very easy, but as you promised i am still waiting for the 3rd video

@CQEAcademy

9 ай бұрын

Thank you for the feedback, that 3rd video should be coming out in a few weeks!

Brilliant video. Thanks so much

@greenbeltacademy

2 күн бұрын

You're absolutely welcome!

Absolutely helpful and such great easy to understand language!

@CQEAcademy

4 ай бұрын

Thanks for the awesome feedback!!!

I have been waiting for this video for weeks. Thank you.🌹

@greenbeltacademy

11 ай бұрын

You're welcome!!!!!

Absolutely great explanation. Looking forward the third part.

@CQEAcademy

8 ай бұрын

Thank you!! I"m working on part 3 right now!

@kavadapurohith8696

7 ай бұрын

Yes me too!

Watching from the Dominican Republic! The information has been beneficial for my CQE Preparation. I appreciate the time and effort!

@greenbeltacademy

9 ай бұрын

You're absolutely welcome Carla!!!!

Look forward to 3rd part.

Very informative video series. Thanks for putting in so much effort

@greenbeltacademy

8 ай бұрын

You're welcome!!!

i'm waiting for your 3rd GRR video, appreciate, amazing

@greenbeltacademy

9 ай бұрын

You're welcome, that 3rd video should be out in the next month or so.

Andy I passed my Green Belt yesterday. Thanks again for the videos!

@greenbeltacademy

11 ай бұрын

Oh wow that's awesome!!! Congratulations!!!

Great, Andy!

@greenbeltacademy

11 ай бұрын

Thanks Victor!

It was refreshing to watch your video. I wanted to brush up my fundamentals about the Gauge R&R and I watched multiple videos on KZread, but your video and explanation was detail, to the point and easy to understand. I am eagerly waiting for part 3 of the series. When are you planning to release? P.S. : - I used to work for Alcon in Houston Facility and had an opportunity to talk to you couple of times. It's good to see your here again online. I wish you the best. :D

@sahilray8458

9 ай бұрын

Also, I'm subscriber now.

thank you so much , You are amazing, You are doing an amazing efforts

@greenbeltacademy

10 ай бұрын

You're absolutely welcome and I"m glad to help!!

Hello! Great videos. Is Part 3 coming soon? Thank you!

Great video

@greenbeltacademy

11 ай бұрын

Thanks!!!!

Awesome content sir, Any plan to continue uploading more? Cheers from Arizona

@greenbeltacademy

6 ай бұрын

Yes, most definitely, and I apologize to everyone who's been waiting for the 3rd video! It's in process!

@guillermoarvizu1723

6 ай бұрын

@@greenbeltacademy awesome!! I will keep my eyes on it

Great video, this material very very help me to make the calculation for the GRR. Thanks..

@greenbeltacademy

5 ай бұрын

You're absolutely welcome!

@CobaReview

5 ай бұрын

@@greenbeltacademy I want to ask for the minute 17:32, "Thus when the GRR includes 5 samples then d2 = 2.4812 and for 10 samples then d2 = 3.1791". Could you please give the link for the table for more samples other than 4 samples? Thank you...

@CQEAcademy

5 ай бұрын

@@CobaReviewI don't have a table to share, but if you google it you should be able to find something very quickly

Watching from South Africa ,Thank you Andy...I'm doing my Certified quality technician. CQT Training course...I find you videos helping me a lot.. The fact is u make clear example.... hopefully I will pass my CQT exams

@greenbeltacademy

10 ай бұрын

You're absolutely welcome and I really appreciate the positive comment!!!!!!!!

Thanks so much.

@CQEAcademy

7 ай бұрын

You're welcome!

@greenbeltacademy

7 ай бұрын

You're welcome!

Thanks for this. What do you do if you can’t collect a sample of parts that span your tolerance. ? Can you just isolate the inspection tool by grabbing the min and the max of the sample parts?

@greenbeltacademy

5 ай бұрын

Hey John, that'll get you fairly close because as long as you've got the Min/Max parts, then your part range will reflect that process variation.

I have taken samples of 100x on part and another data set of 10x 10 parts. For calculating repeatability(R-double bar/d2) ,I'm using d2=3.088 on the 10x 10parts. what d2 should I use for the 100x on one part? Thanks

If the measurement itself is a combination of operator decision making and the tool is the analysis still valid?

I just started watching your videos which are very informative. Where can I find your Excel template(s) if they are still available? Thanks

@greenbeltacademy

5 ай бұрын

You can get them here: www.Greenbeltacademy.com/GaugeR&R

@paulharms1168

5 ай бұрын

Thanks Andy, much appreciated. ​@@greenbeltacademy

At 14:09 why you took value of N equals to 1? because n represent sample size and in our case it is equals to 10.

@CQEAcademy

3 ай бұрын

This is a tricky concept to explain, but when we calculator the operator range, we evaluated only 3 different values (Average of A, Average of B and Average of C). So in that calculation we don't consider the 10 samples that were measured. Which is odd I know, and that m-value reflects the number of operators.

@pawandeepsingh8380

3 ай бұрын

@@CQEAcademy so in all case we took the value of n equals to 1 while measuring reproducability?

@CQEAcademy

3 ай бұрын

@@pawandeepsingh8380 Yes!

What if R0 is super small where AV turns into a negative number before the sqrt?

@greenbeltacademy

2 ай бұрын

Hey Frank, that sounds hypothetical, and I've never seen that before. Technically, if the EV is large the operator range will reflect/capture/include that variation (hence the subtraction), and operators tend to create variation in a measurement system, so I've never seen AV turn into a negative number. A negative number is impossible, you can't have negative variation.

Sir, firstly thank you for the videos very informative. Question when doing the AV @ 14:15, you said use n=1, but in the video it shows n=10...just checking and want to make sure if this is correct.

@greenbeltacademy

6 ай бұрын

Great question! okay, so in that equation, when looking up the d2 factor, the "n" value that we use is always equal to 1, which is why in the equation I use 1.912 as the d2 factor. However, in that same equation (and I get how confusing this is), when calculating AV, that n value is still 10 because there are 10 samples in the gauge R&R

Thank you for this excellent tutorial! I do have one question at 14min 10s where you calculate the reproducibility value. How did you come up values for n * r?

@greenbeltacademy

3 ай бұрын

When looking up up the d2 factor for reproducibility you stay in the n=1 row, and then your m-value is equal to the number of appraisers. So in my case, I had 3 operators, so my m-value = 3, and my d2 factor = 1.912

@ahyungrocks5509

3 ай бұрын

@@greenbeltacademy Sorry, I should be little more elaborate on my question. For the Appraiser Variation (AV) equation, the 2nd half of the equation is (EV^2)/(n*r). How did you come up with the value for n and r? I saw you had 10 for n and 3 for r. Can you explain what do they stand for?

@greenbeltacademy

3 ай бұрын

@@ahyungrocks5509 Oh gotcha, okay so in that equation n = the number of samples (10), and r is the number of replicate measurements (3).

@ahyungrocks5509

3 ай бұрын

@@greenbeltacademy thank you

I still cannot understand the AV calculation; why d2=1.912? If the subgroup size=3, the number of combinations of parts and operators (g) = 10 parts and 3 Operators = 10*3=30. Based on the d2 table, we can know that the d2=1.693 instead of 1.192. Can you explain why d2=1.192 in detail in your case study?

How come operator C almost always had a lower range value. Could it be that person has more experience/training with the gage.

@CQEAcademy

11 ай бұрын

Hey Syed! You're using the right approach when looking at the data! That would be a good hypothesis for that situation, and you could prove that theory by observing the technique of that operator, relative to his/her peers, and evaluating their different levels of training/experience

In Appraiser Variation formula, what is r ? you have calculated n*r as 10*3. Is r same as m ?

@greenbeltacademy

3 ай бұрын

r is the number of replicate measurements, which in this example I took 3 replicate measurements of each sample.

@ahamedthanseeks1440

3 ай бұрын

@@greenbeltacademy thanks for the reply. Nice video again man. Its really helpful.

@greenbeltacademy

3 ай бұрын

@@ahamedthanseeks1440 You're welcome!

Please can you tell me the link for the excell sheet and when will the third video be available ?

@greenbeltacademy

11 ай бұрын

The third video will come out in the next 6-8 weeks! Here's the link for the excel spreadsheet: www.Greenbeltacademy.com/GaugeR&R

@achouchazeddine7336

9 ай бұрын

helo any update on the third video@@greenbeltacademy

@greenbeltacademy

9 ай бұрын

Hey @@achouchazeddine7336 !!! I'm working on a few other commitments right now, but should have it done in the next month or so.

Why n=10 but d2=1.912? If n=10 in your calculation, does that mean d2=1.716?

@CQEAcademy

2 ай бұрын

Great question - and that's a tricky part of the whole process, so in that reproducibility calculation we use n = 10 because that sample size is used as an adjustment factor to essentially eliminate EV from the AV calculation. However when using the table to look up the d2 factor for AV you use a different perspective.

Thank you for such a nice video! However, there is one question that lingers in my mind after watching this. So basically in Gauge R&R, you want to measure standard deviation (SD), which can be directly computed from your measured data. Thus my question then is, why bother calculating it "indirectly" from the values of range (R) and d2. Thanks!

@subasa83

5 ай бұрын

Another question is the meaning of the R double bar. This is used to calculate the inherent variation of WITHIN the instrument. However, R double bar is calculated by taking the average of the range values from ALL OPERATOR and also from DIFFERENT ITEMS. Does this means that the R double bar also carries with it the variance of "operator to operator" and "item to item"? It kind of does not make sense here.

@CQEAcademy

5 ай бұрын

Hey There! Okay, great question about range versus standard deviation. The answer to this question (I believe) is somewhat historical. Years ago, when the GR&R method was first developed, calculations were done by hand, and range values are easier to calculate than standard deviation. Hence the method today. Now that we have minitab, ANOVA has become a much more popular method for evaluating GR&R, and the ANOVA method does calculate standard deviation directly instead of the range.

@CQEAcademy

5 ай бұрын

@@subasa83No, R-double bar doesn't not include the variation between operators because that variation blocks out any contribution from the operator or the parts. Remember, those range values that we use to calculate R-double bar, is ONLY the variation within a single operator, within a single sample. So any variation that is expressed into those range values comes from the measurement equipment itself.

@subasa83

5 ай бұрын

@@CQEAcademy Tks a lot for your spot-on answer. How about my first question? Why don't we calculate SD directly from the data?

@greenbeltacademy

4 ай бұрын

@@subasa83 hmm that's weird, I thought I had already replied to that question. So honestly the answer has to do with history. Historically, Quality Engineerings made these calculations by hand, and the range value is so much easier to calculate by hand than the standard deviation. Now that we have software like minitab, we use ANOVA which calculates the SD instead of the range value. Hopefully that makes sense!

What about video 3 guys 😢?

@greenbeltacademy

8 ай бұрын

I'm working on it now, should be done in the next 4 weeks

you miss explaining n and r

@greenbeltacademy

7 ай бұрын

Hey There! Which N and R value are you referring too?

@egwinharianto2851

7 ай бұрын

@@greenbeltacademy thank you for the reply , at 13:54

@greenbeltacademy

7 ай бұрын

Thanks @@egwinharianto2851 ! Okay, so that n is the number of samples used in the Gauge R&R (10 in this example), and r is the number of replicate measurements (3 in this example).