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As well, your data set implies a causal relationship between the treatment (octane level) and horsepower. But ANOVA is non-directional. We might feel confident in rejecting the null, but we cannot then determine direction. The F test only tells us if we see variation in means of different categories. It does NOT tell us that the correlation between X and Y is positive or negative.

Further, we never say that the NULL hypothesis is TRUE, we presume it is true, due to our understanding of proof and deductive logic. Hence, our F statistic, as compared to the F critical value, might lead us to say that we cannot reject the null with a given level of confidence. You claimed that if F-stat < F-crit, the "null is true" - that is just WRONG language. We have NO idea if the null hypothesis is true. We should only make probabilistic declarations.

We do NOT say that the NULL hypothesis is FALSE. We say that with a given degree of certainty (probability; confidence) we can REJECT the null.

Thank for the videos! What about destructive tests?

Thank you for posting this video!. Just to clarify, you go through what the ASQ Six Sigma certification differences are. What about Lean Six Sigma? I'm looking for the one with more of a business focus which I think would be LSS. ASQ only offers SS but IASSC offer LLS. What are your thoughts on getting one over the other one? SS/LLS and ASQ/IASCC. Thanks,

Very nice interpretation. Thanks

Very good explanation, thank you

I love the way you explained it and the example you used. Very much appreciated Andy!

I'm an quality engineer with about 8 years experience and never took any of ASQ examination I'm planning to take CQE or CQPA but I don't know which one should I choose .... some of my friends told me to take CQE because it cover all the aspects in CQPA but 1. I don't want to miss anything on the other hand 2. I don't want to waste my time and money on taking certificates that can be in only one or two. 3. I don't want to fail in exam because I started in the difficult one Please advice me Thanks

Brilliant video. Thanks so much

Thank you!!

where is the Excel file for the calculations? I do not understand how to calculate GM the grand mean

Great information

How different is this process when you do an attribute MSA rather than a variable MSA? For example I have a camera that tells me if a part is good or no good. The problem is the camera is giving false rejects so my boss asked me to do an MSA/Gauge R&R on it. I feel like a lot of the calculations in this video wouldn't work on the binary data I am going to get but I could be wrong.

It was very helpful.

Hello, first of all, thanks for this excellent video. I'm interested in the practice exams. How can I acquire them?

I need to request a refund from my school fees because you explained that my lecturer used 2 hours to confuse me in 30 minutes, and it was awesome

Do I need to know calculus (or higher?) for this?

Very useful, thank you.

Thank you sir🎉

Thank you

This is a new concept to me Andy. Thanks so much!

Thank you Andy!

great info and presentation, very well summarized! thanks, as an engineer with couple years experience in manufacturing and a masters I was confused as to whether to go for the Green Belt or CQE. I have decided to take the Green Belt first.

Thank you that was superbly done. Massive help for my assessment

Hi, I only received the version A of your cheat sheet. There is no formula for the takt time on mine.

One of the best teacher in my life. He made complicated thing like a cake

Best explanation so far, really great job!!

Very well explained especially the null hypothesis :-) THank you

How to find cycle time

Very informative 3 videos.... thank you!

Great video, very useful information, thank you so much!!

Hey.. i was not able to access the cheat sheet with the link. Where can i get a good one for the exam

What’s the differences between the green belt E-learning vs green belt certification? I’m on the ASQ website but both look like they are online.

Did you remove the Gauge R&R spreadsheet?

Best ANOVA explanation in YT!!! Love how you repeated key concept again and again, now its completely clarified from the confusion i got before watching.

Hey mate, I have certain independent values(Laying speed, force, Torque, acceleration and deceleration). I want to do an DoE. Now these are the process parameters of the machine, which has 16 heads. These 16 heads can be controlled simultaneous. Id like to use 3 of them and test the parameters on each of them. Besides that, the tape may vary aswell, since it can be wider or thicker and it's up to the producer. How do I setup my DoE Plan?

Thank you so much. Enjoyed the lecture.

Thank you so much

You really changed my prospect toward biostatistics ( MD. by the way ), getting my Masters in Clinical Research. I really enjoyed it , believe me. Thank you. Really!!

I do not understand the order of the videos. Why they are not ordered according to the syllabus?

There’s something to be said for seeing it all broken down. It’s my pet peeve when someone treats a stats tool like a black box then ties their colours to the mast without appreciation of all the out falls and inner workings. Great video, I’ve often wondered how to cross validate duplicate tool performance correctly and now I know.

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

If you are looking to reject or accept product against a tolerance what range of parts should I choose for my study? Spread the tolerance or spread over the known historical process variation? I’ve been told tolerance but as the process is capable I need to misprocess to generate the arts that cover the tolerance.

Focused, Clear and Informative, Thanks.

I have question that doing CQE for Lean six sigma if there are 2 years experience?

hands down fantastic video 👏👏👏please don't stop making awesome videos like this sir

Hi Andy, how repeatability 12.10% + reproducibility 25.19% = Total GRNR 27.95%? I thought the sum would be 37.29%?

very clear explanation!!! I now know what is ANOVA 🥰 (learned it several times but unclear about its core meaning 😮‍💨

I am interested in full factorial video too