Statistics 101: Understanding Correlation

Statistics 101: Understanding Correlation
In this video, we discuss the basic concepts of another bivariate relationship; correlation. Previous videos examined covariance and in this lesson, we tie the two concepts together. Correlation comes with certain caveats and we talk about those as well. Finally, we walk through a simple example involving correlation and its interpretation. Enjoy!
My playlist table of contents, Video Companion Guide PDF documents, and file downloads can be found on my website: www.bcfoltz.com

[@YahyaMarei]

You saved my PhD analysis; May God bless you forever

[@kimberleeflatt]

In year 4 of 5 of my PhD. Multiple Regression Class is KILLING me! I found your videos as I am trying to increase my conceptual understanding of some of the information that is foundational to what we are doing now. I swear your positive words made me cry! Wish I had found you earlier! Thank you for showing me that there are good stats teachers on the planet, you are a rare breed!

[@BrandonFoltz]

Kimberlee Flatt Hang in there! I have an entire playlist on multiple regression is that if where you are. It may not go into as much excruciating detail as your class but it gives a good foundation on which everything else it based. You can do it! :)

[@kimberleeflatt]

I am on it now. I appriciate all of this effort on your end. I really do want to get this and maybe even be good at it! There's so much research yet to do! (My research interest is in Autism treatment specifically.) I wonder how many people you have helped across a wide range of focused study? You will never know the influence you have had!

[@BruceKarrde]

2 years later; How is your research going? I have been diagnosed with Aspergers myself and my interest is in statistics :D

[@betchitty]

I agree. I am using this in my current work. While I learned/used this for my MBA, I've rarely used it in real world applications. The encouragement is appreciated.

[@addmad99]

Seriously.... you got into PhD and could not understand 100 level statistics ... advantage of being White born in a Western Country. Who gave to admission?

[@karmaedwards5321]

Brandon, your kind words of encouragement are absolutely awesome and heartfelt. Thank you so much!

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O my goodness...the first couple comments of your video has me in tears....Thank you for the reminder. I needed it tonight!

[@joyo.9562]

Youy did a better job explaining correlation in 30min than my professor did in 1hour of class. GOD BLESS YOU!!!!!!! Love these videos. Ur a LIFESAVER!!!

[@TheMightyDrago]

The introductory motivational talk is really what I needed right now. I haven’t even started watching the rest of the video and I already appreciate it so much.

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The pep talk I didn't know I needed. I do heavy stats in my PhD and I have never had a stats class. You're a life saver.

[@BrandonFoltz]

Oh thanks so much Amy! It is my great pleasure to help where I can. Just pay it forward as the opportunities come, so the saying goes. All the very best! - B

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You’re comment at the beginning like the pep talks just made my whole day , I had such much test anxiety and hearing that is exactly what I needed. You’re the best! Thank you for making a positive impact ! I’m going to ace my test now

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Everyone is complaining why didn't I find this channel some months before and so. I won't do that . I have exam due in 40 days and I have been following this channel like since beginning of my preparation ! I believe my exams are going to be good. Thank you Brandon Foltz !

[@juanmanuelespinoza20]

I was struggling with the concepts of covariance and correlation, reading textbooks and papers where they just assume you knew, but now that I saw your last three videos of this list I can finally get them and move on to other material. Thank you!

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Thank you for creating this video. As a college freshman that is starting college after 28 years of being out of any form of formal education, your videos have made it easier to understand and "get through" my statistics class.

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The world needs teachers like you, you're the best math teacher I've ever had.

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This video was not only informative in helping me understand correlation concepts but it was also very encouraging as I'm struggling with a research and stats class having never taken a research or stats class before. Your encouraging comments at the beginning and end do not go unnoticed or unappreciated. Thanks so much!

[@BrandonFoltz]

Hi Jenny! Thank you much for the kind words. Creators like me really appreciate the feedback. Sometimes we just need confidence that we can indeed do it. And you can! You came to find the help you needed and that makes all the difference. Keep on learning! 🐞

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I just purchased the whole pdf companion guide because you're a fantastic explainer who understands how to communicate the connections between abstract concepts, analysis, and interpretation. Never stop teaching. Never.

[@ryanhutchins2634]

Brandon, I cannot tell you how helpful it is to have the underlying concepts explained so simply and clearly. I use statistics a lot for work, but have not had a formal class in it save for the graduate version of mathematical statistics. I understood the math, but what I was computing, I hadn't a clue. This clarifies everything. Bravo!

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I deeply appreciate the two messages at the beginning of the video. Very encouraging. Thank you.

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I learn Parametric and Non-parametric tests from your videos, Best channel for learning statistics.

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[@RohanKumar-vx5sb]

you do it really well!! thank you, your set of videos on variance covariance and correlation have so far cleared my understanding the most, providing everything from definition to inutition to examples and the notion to look at scatter plots first. Thank you very much for making! :)

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Love the quotes you use at the beginning of videos + your words of encouragement for learners.

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You are such a great teacher , have recommended you to my classmates and Professor in Health care MBA studying data analytics and decision making, your videos are definitely one of the best in this particular subject, thanks again

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I was just not understanding the textbook for my statistics class and could not get a good grasp on the concepts I was attempting to learn. After a long history of excellent grades and knowing I was pushing myself to exceed to the best of my ability, I was extremely affected and stressed over the possibility of failing the class. Your videos have really helped me fit the information together in a way that I was just not capable of doing on my own. The laymen explanations, the relatable examples and the positive reinforcement that we as students are doing great really encouraged me to continue pushing through! As of right now, I am maintaining a 96 in the class with only one assignment and one paper left to go (which brought me back to your correlation and regression videos)! Thank you for taking your time to help others succeed and I would definitely keep your intros!

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The best explanations in the concepts I have seen on KZbin, and I've looked at quite a few.

[@luprof9686]

I've been watching tons of your videos lately since I'm preparing for my statistics final... Your videos and examples make it a lot more fun than I expected it to be! Thank you for dedicating so much time and thought to these, it's incredibly appreciated. The encouragement at the beginning of each video always keeps me going :)

[@tenuousremarried]

I want to thank you for helping me to pass my statistics course.Your videos are very helping to students.

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Brandon Foltz I have no words for describing your work., A Big Thank you and gratitude for your all work.

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Thank you so much for making these videos. They are really helpful! My lecturer doesn't actually say anything in our statics module lectures, we just have to read off of a poorly worded word document. Your videos are actually making statistics understandable! Thank you so much!

[@kathyknapp5519]

Your classes are always very helpful! Thank you, Brandon!

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Mr Foltz - you are an amazing educator! I have done courses on statistics in my younger days, but I am going to view all you videos as a refresher! Thanks so much for your time and effort.

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Talented educator with superior teaching skills. Watching this video in 2021 and finding your tutorial to be just as relevant and helpful in understanding statistics 101. Thank you!!!

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Great job! You have a real talent for giving clear explanations! Thanks.

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Dude, thank you for the lesson! And for the encouraging words at the beginning of the video. Cheers!

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this is both a revision and learning something new. Keep the talks coming. Grateful to you.

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Great video, slow enough to take notes while also quick enough not to take too much time!

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You are not only a teacher but a healer too.

[@BrandonFoltz]

Hi Monique! I am very impressed that you are taking the proactive steps to prepare for the fall semester in April. You should give yourself a large pat on the back for that. Remember there is no need to get overly worked up over the math of stats. IMHO the real important part of stats is understanding the concept behind what you are doing and then the interpretation. You can do it! All the best, B.

[@damarrahjameson482]

Hey Brandon, you are an awesome teacher...the best for advance stats beginners. Teaching/instructions style and approach is key for learners in my opinion. Because of my initial challenges with stats courses, i seriously gave thought about doing research on working memory and cognitive load theory around stats teaching/learning at the graduate level. I found that that teaching/instruction style was key for me, key to understanding/learning...I would blame myself and wondered if I had a math disability but this wasn't the case once I connected with the right teacher and found a rhythm and way of learning stats. I love the way you combine instruction with visuals, and you keep language simple/basic. You are a God send. Wish I would've discovered you two years ago. I've been watching your videos over the past day and a half. YOU ROCK! This semester will be my first semester, at year 4 of my PhD program, walking into a stats class confident and ready, and actually excited about the course.

[@simsohi]

These videos are excellent, thank you! Very nice straight forward structure, and you have an engaging voice, unlike most others I've attempted to watch.

[@maxinelyu7875]

Thanks for being an excellent teacher and telling me to believe in myself!

[@BrandonFoltz]

Hi Ronald! Just spent the evening reorganizing my entire library of statistics videos into playlists. They are sequenced like a typical introductory stats textbook both at the playlist level and inside each playlist. I hope you find it easier to navigate. All the best, B.

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By the way dear Mr. Brandon you gotta gift of God to teach people. The way you give example and notice about diferrences in between real-life and the theoretical patterns is obviously fantastic! Keep it up.

[@StArGiRlx426]

I've always hated math & currently struggling in a stats class. Your encouragement in the beginning really gave me a boost

[@lukaskinezi430]

Now I got it why I always will need at least have an eye on my data scatterplot: If the scatterplot of the data does not bear resemblance to a linear shape itself that means it is not applicable for correlation concept being applied onto bivariate data! Love it!

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I'm taking a masters degree in Data Science and Big Data, I have a Computer Science background, and there are terms or concepts that were long forgotten and I'm struggling with everything related to statistics. I just found your videos and I've watched so far a couple of them. I cannot thank you enough for putting all this together and giving me the foundation I needed to continue with my masters. I appreciate you take the time for sharing your knowledge with this community and your positive words make a real impact.

[@TRUE48KING]

Brandon, thank you for this video "Understanding Correlation". You're right, for someone like me, a beginner in Statistics, you presented the information a such a simple and concise way that it was easy for me to "correlate" and understand. Thanks again.

[@Surya42930]

One of the best explanations ever seen...thank you dear Brandon

[@raquelchin4744]

Aw I have an exam tomorrow that’s really been giving me such anxiety and I almost cried during your introductory pep talk. Thank you for your content! This is my second video of yours I’m watching and I’m starting to feel more comfortable with correlation and residuals.

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You Sexy feeling

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Hello Brandon, thank you so much for your videos, they are so helpful and really easy to follow ! I appreciate the time you gave us and your efforts and thank you for being supportive and encouraging ! Have a great day

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You deserve more subscribers, you're getting me through college!

[@BrandonFoltz]

B Ali Spread the word! :) But actually, you are getting you through college. By going out and finding the resources you need to learn, you are punching your own ticket to success. Keep on keeping on!

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Excellent video, crisp, clear and easy to follow. Thank you!

[@applebeans1]

You are such a great teacher!! Thank you for your uplifting words, I now have the motivation to study for my exam :)

[@BrandonFoltz]

Well thank you! People like yourself inspire me. You will do great I know it! Best, B.

[@mariahsofiah]

You and your hard work are SO appreciated!!!!!!! Thank you!

[@andrewmorton1237]

Thank you for the tutorial. Great encouraging words also, I was a struggling student today, then the light went on.

[@catherinesutton8898]

I loved the positivity in this video. Thank you!

[@BrandonFoltz]

@abhi124s Fantastic! Thank you for your comment. I am thinking about doing some Statistical Quality Control videos in the future so I am glad you are able to apply them to your QA work. Best of luck on your ASQ Black Belt certification! Best, B.

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Thank you so much for all your great videos! Keep adding more! You are helping so many people. Greatly appreciated. :)

[@xiaoyuanlim8095]

i like how you start your video and end off with encouragement ! very well explained, thanks Brandon !

[@dwallace21000]

Thank you sooooo much! I now have a better understanding of correlation. Your video is a great resource for me. I plan to view all of the others.

[@af010]

Thank you sooooo much, please keep uploading such videos. You explained correlations in a more coherent manner than our lecturer. I LOVE YOU.

[@ERIKAZM]

This is the 5th video I have watched. I really admire the simplicity of teaching these topics.

[@chemstid30]

Very special thank's to you Prof.Brandon..

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It's 2021 and you are still the best

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I actually think I can pass my stats exam now. Thank you so much, I wish you were my lecturer.

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Hi Brandon. Thank you so much. My Stats lecturer demonstrates, let us say, a less than perfect correlation between her assumed knowledge and the necessary paedagogics involved. I am glad that I found your lectures and actually enjoy the topics for the first time ever. Considering that I am a relative dinosaur and have some ancient doctorate to my name, that speaks for itself and for you. Diolch yn fawr

[@iokastiandroutsou773]

YOU DESERVE CONGRATULATIONS AND MANY THANK FOR MAKING ME LOVE STATISTICS AND HAVE HOPE TO FINISH MY MSC.

[@user-xt8up2qi9b]

The opening of this video hits different in times like these thank you!

[@BrandonFoltz]

You're so welcome!

[@sahb8091]

I always admire terrific teachers! You sir, are among them. Please do continue making videos, both introductory and more challenging.

[@BrandonFoltz]

B Ali My goodness thank you so much for your kind words. Many more videos are in the works. Time is the only constraint and I refuse to sacrifice quality, so they take time. stay tuned!

[@fnjyusername]

***** Hi sir, I'm not sure if Kalman filter is in line of statistics studies, but if it does, I hope youll make some introduction. On signal smoothing, we normally use SMA and EMA, but Kalman is a step forward. Thank you indeed outstanding teacher.

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You're*

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ugh, I wish I discovered this channel like...10 months ago when I had my econometrics class, it would've been a lifesaver. This will help a lot of those who have advance statistics or econometrics. I would recommend though you apply them using SPSS that way you'd help us research student understand more about it. I have a question if you please can answer me, it is related to regression and correlation. so I know that we have to have a high r-square in the regression to show a strong relationship. when I'm running simple linear regression the r-square is negligible (0.17) it is so low also pearson correlation is low at 0.4.I can understand that other factors could contribute to the effect other than this one and that is what I will say when I defend my thesis, but the thing is I came across something that says if your purpose is to predict then you have to have a high r-square. Considering my research question "does workplace bullying predict employees' intention to leave" will this affect negatively my thesis? should I change the 'predict' into 'affect' so no misunderstanding or problems arise when I discuss my results? second: workplace bullying is divided into three groups, does that mean I should use multiple regression instead of linear? I used linear because it is 1 independent variable in the main research question. I did a linear regression for the three groups separately. Thank you in advance!

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OMG Thank you! I have been failing this lesson for a while now! It helped me a lot :)

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Thank you very, very much! It is very easy to understand statistics from your videos!

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THANK YOU SO MUCH FOR THE PEP TALK AT THE BEGINNING. You are so kind. I seriously was thinking of dropping this class... but you know what? I have faith in me!

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You sexy feeling

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This was EXTREMELY helpful!

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Thank you so much. Thanks to your explanation, I got a better understanding of what my professor failed to explain well. And also thank you for your encouragement!

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WOW, YOU ARE A REALLY GREAT TEACHER I EVER !!!!! slides are really clear, and explanation was perfect for everything! Thanks again

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Amazing Videos about Stats....Simply crystal clear about foundations....very helpful...Big Thank You...Brandon

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Thank you so much, this was so helpful to my Statistics finals. We appreciate your efforts

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Very clear explanation! Thanks so much.

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And once again, your lecture helped me a lot. Thank you very much!!

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U saved my life. thanks ... very clear explanations

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Great Video, Thank you so much Mr. Folts

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Thanks for explaining these concepts so well. The quality of your work is exceptional.

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thank you for your supportive and clear explanations!

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Thanks Brandon Foltz for this incredible video, it has helped me a lot with study.

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Thank you so much, pls keep making videos, you are very helpful and very good at explaining! So happy I found you!

[@yemama20]

Thanks for the word of encouragement at the end of your video.

[@AaronCarlsson]

Thank you for posting this video, it really helped me.

[@MsNurseone]

Thank you for the motivation, I really needed it. Your video helped me and I did get a better understanding of covariance and correlation.

[@aldangelo149]

Good stuff. I'll keep watching!

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Excellent video - helps tremendously.

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Nice straightforward video. Now I feel more confident to teach.

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stat was killing me as i was not intrested to learn it..meanwhile i found ur video that has boost my intrest on stat..thanku so much..u deserves lots of respect.

[@pierre-marcjodoin5991]

Again a great video. So many thanks Brandon!