Statistics 101: Understanding Covariance

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  • เผยแพร่เมื่อ 27 ก.ย. 2024

ความคิดเห็น • 500

  • @thsiisme
    @thsiisme 10 ปีที่แล้ว +168

    honestly i wish 70% of my tuition could go to people like you......

  • @wenyichu3486
    @wenyichu3486 6 ปีที่แล้ว +25

    "You may just have a temporary tough patch." You are so encouraging! Thank you!

  • @mandelbro777
    @mandelbro777 4 ปีที่แล้ว +3

    Very, very clear, structured and visual demonstration of Covariance.
    > "Fire all the tutors and professors, we've found THE GUY !!" - Me, 2020

  • @KristiLeeVan
    @KristiLeeVan 10 ปีที่แล้ว

    THANK YOU, THANK YOU, THANK YOU! For the past 6 hours, I have read and watched videos on covariance to try and solve this one problem with no success. After watching your video, I worked the problem and immediately got the correct answer. You sir, are my hero!

  • @fatememont6810
    @fatememont6810 4 ปีที่แล้ว +2

    i love you man. i keep going through my instructor's lectures a thousand times but i just won't get it until i watch your videos because he fails to describe basic things before he goes into deeper more complex stuff. you are literally saving my life this semester!

  • @CorDeGeleia
    @CorDeGeleia 11 ปีที่แล้ว +12

    Honestly, best explanation of covariance I ever heard

  • @akshaymathur8623
    @akshaymathur8623 4 ปีที่แล้ว

    I have been binge watching your videos for past 2 days and I have completed 3 playlists.

  • @BoutinMathieu
    @BoutinMathieu 10 ปีที่แล้ว +79

    I really like your videos, you teach very well. You are very comparable to Salman Khan from Khan Academy. We need teachers like you on TH-cam!

    • @BrandonFoltz
      @BrandonFoltz  10 ปีที่แล้ว +43

      That is very kind of you Mathieu. Sal is an inspiration to so many of us, but I think more so that people like him and me are even more inspired by you; the learners we seek to help. Keep working hard and never stop learning! - B

    • @guilhermehigashi
      @guilhermehigashi 8 ปีที่แล้ว +1

      +Brandon Foltz that was a really kind statement :)

    • @Qbabxtra
      @Qbabxtra 8 ปีที่แล้ว +1

      +Brandon Foltz Yeah i agree with you Brandon. Mathieus compliment was well written, but not a A+ compliment, so a -B grading is justified.

    • @indigolight22
      @indigolight22 7 ปีที่แล้ว +1

      I have been going through a lot of video's regarding the subject of statistics (for university).
      Many other authors video's were sometimes confusing, but your video's were thorough, clear and well-build.
      Thanks for your video's, I hope they contribute financially as you deserve it!
      Greetings from Belgium.

  • @shankarnarayanb
    @shankarnarayanb 11 ปีที่แล้ว +1

    The sample variance always tends to under estimate the dispersion when compared to population.To compensate for it, its advised to divide the quotient by (n-1) rather than 'n'.
    Brandon great job with the videos and keep up the good work.You are real inspiration for the rest of us!!

  • @balajicanchi5538
    @balajicanchi5538 8 ปีที่แล้ว

    I haven't come across any better presentation for this topic, Well Said in a simple and easy way!

  • @rowlandgoddy-worlu3382
    @rowlandgoddy-worlu3382 3 ปีที่แล้ว

    If instructors were like this, education would be so much easier.
    This is as simple as possible.
    Thanks, Brandon, for the explanation.

    • @BrandonFoltz
      @BrandonFoltz  3 ปีที่แล้ว

      Thank you so much 🥰 Having it be that beneficial to you makes it all worthwhile. Most instructors have good intentions, but are often run ragged.

  • @zatizsumkoolshyte
    @zatizsumkoolshyte 11 ปีที่แล้ว +3

    Brandon, you are an amazing teacher who explains concepts clearly and concisely. A lot of thought and planning must have gone into making these series of videos to make them easy to comprehend.
    Thank you very much for making learning so much easier for me! :)

  • @i-fanlin568
    @i-fanlin568 7 ปีที่แล้ว +5

    you teach so well!
    Through your teaching, I can easily understand the concept of covariance.
    Deeply appreciate.

  • @onurucar1112
    @onurucar1112 3 ปีที่แล้ว

    I still can't believe that you're giving these away for free. I paid thousands of dollars to my college to get my statistics problems graded I learned how to solve from your videos.

  • @louiswhittington7506
    @louiswhittington7506 8 ปีที่แล้ว

    I found this video very helpful and easy to understand. I would recommend it to anyone who wants to understand the basics of covariance

  • @richardgordon
    @richardgordon 5 ปีที่แล้ว

    Thank God for Brandon Foltz and people like him. Somebody who can explain things simply and clearly!

  • @gregsnook1
    @gregsnook1 9 ปีที่แล้ว

    You sir are seriously a saint. I may be late to the party but expect another view of every video you have put out and will put out.

  • @VijayRajanna
    @VijayRajanna 10 ปีที่แล้ว

    Covariance is a simple concept, but many fail to teach/understand the intuition behind it.
    You did a great job !!! The best explanation.

  • @jordanhuusy
    @jordanhuusy 10 ปีที่แล้ว

    you are a very efficient teacher in that you don't take a piece of the puzzle for granted, leaving a student confused. keep it up!

  • @forbanch
    @forbanch 11 ปีที่แล้ว

    One of the best explanations of the concept that I've seen.

  • @ashleyterik1754
    @ashleyterik1754 9 ปีที่แล้ว

    You were born to be a teacher! Keep doing what your doing! You are great!

  • @anthonygoldie6961
    @anthonygoldie6961 4 ปีที่แล้ว

    Your videos continue to simplify things and help me understand things my university lecturer, nice guy that he is, does not explain well. Thank you!

  • @lyveng1988
    @lyveng1988 10 ปีที่แล้ว

    I guess I'll be a statistics ninja if I finish watching all your videos. Thanks man. Your slow and steady teaching is very helpful for people like me who don't have much statistics experience.

  • @RandomChela
    @RandomChela 11 ปีที่แล้ว

    Omg! Thank you so much! This is awesome! I am taking a multivariate analysis course that is kicking my butt because I am still lost with bivariate relationships. Please keep these videos coming!

  • @wanpokke
    @wanpokke 6 ปีที่แล้ว

    You are a gentleman and a scholar. Thank you for making this video for all to learn from.

  • @ragsanoor
    @ragsanoor 11 ปีที่แล้ว

    So lucid... so effective .... even a child can understand what u r explaining... Thank you very much Sir...

  • @amanhlanesc
    @amanhlanesc 8 ปีที่แล้ว

    What a wonderful teacher you are !!! Stay blessed.

  • @ghadaalbukhaiti9160
    @ghadaalbukhaiti9160 3 ปีที่แล้ว

    I really like how you explain statistics in great smooth way , you make it very interesting and want to watch all your videos. Thank you!

  • @AndyRyanTX
    @AndyRyanTX 8 ปีที่แล้ว

    You explain this so much better than my statistics book. You explain it in a way that a human being can understand. Why can't they all make it sound this easy?

  • @justmeva
    @justmeva 10 ปีที่แล้ว +1

    Thank you for putting your lectures on TH-cam. They have made my class life a lot better. Your lectures are clear and concise. Not only that but they far exceed my classroom lectures and materials.

  • @kumar0708ajit
    @kumar0708ajit 5 ปีที่แล้ว

    I can't thank you enough Brandon on creating these videos that breaks down complex topics in such easy to understand way. 1 fan up.

  • @rhoninpowers
    @rhoninpowers 7 ปีที่แล้ว

    another great video...I actually worked through the table example using an excel spreadsheet...I know almost nothing about excel...however in the few short minutes of watching you input formulas manually in excel like you did in that previous video...I WAS ABLE TO DO THE SAME THING FOR THE TABLE EXAMPLE IN THIS VIDEO... thanks again for sharing beyond the knowledge...but your unique way to really teach this stuff in a universally accessible way.... oh and thanks for helping me conquer and find a new love of excel. Worked around it for years... now can work "within" it. You're the best!!!!!

  • @abrahamgreenidge
    @abrahamgreenidge 10 ปีที่แล้ว

    Dudeeeeeeeeeeeeeeee!!!!!! you are an explainer for life, i understood it better with this vidoe than when am in class..thanks, now go make more

  • @alliegator716
    @alliegator716 7 ปีที่แล้ว

    Im currently in statistics and after having a professor who speaks too fast and doesn't really go over things hearing someone speak slow, clearly, and thoroughly on the topics I don't understand is so refreshing

  • @cbaide100
    @cbaide100 8 ปีที่แล้ว

    Superb videos. Very clear, concise and to the point with real life examples to nail down in our brains the knowledge the videos convey. Understanding the lesson taught in the video gives me a sense of confidence because now I know.

  • @snsism503
    @snsism503 4 ปีที่แล้ว

    Hi Brandon, i am from India, planning to make my career in business intelligence. Must say, even though i had done some basic stats in my school and remember some part of it, i have never been so clear and confident of my concepts of stats like i am now after following you videos on TH-cam. This is pure gold for free ! I am recommending this channel to my peers if they are really interested in clarifying their concepts in stats

  • @patticmcconnell
    @patticmcconnell 6 ปีที่แล้ว

    Great teacher. I just wish all teachers could follow your lead!

  • @prabhapanth6762
    @prabhapanth6762 7 ปีที่แล้ว

    Thank you, you have explained it very well. Usually in class, only the formula is given, and we are asked to solve the problems, but are not told what is its significance, and when to use it.

  • @youthf7c343
    @youthf7c343 9 ปีที่แล้ว +11

    Thank you Sir, I finally understood the concept of Covariance

  • @catragmitch
    @catragmitch 6 ปีที่แล้ว +4

    These videos are really very wonderful. Even doing a high level, they are helpful for the basic concepts. Would love it if you'd get into more complex topics: clustering, time-series analysis etc

  • @kritpaco
    @kritpaco 11 ปีที่แล้ว

    fantastic video! i especially like the fact that you explain not only how to calculate covariance but show how it is used in reality so that it is not just an abstract concept, but something of practical use that i can relate to the world around me, keep up the good work

  • @mirjalolm4749
    @mirjalolm4749 7 ปีที่แล้ว

    this video makes me understand completely about Covariance.So many thanks

  • @maxdesancha6025
    @maxdesancha6025 6 ปีที่แล้ว

    These videos are still helping people 5 years on. Many thanks!!

    • @Guidussify
      @Guidussify 5 หลายเดือนก่อน

      update: these videos are still helping people 11 years later!

  • @aleksagordic9593
    @aleksagordic9593 4 ปีที่แล้ว

    Bravo! Giving us both the geometrical/conceptual intuition and numerical intuition and also in the right order! That's the right way to explain stuff.

  • @theresadavis1171
    @theresadavis1171 10 ปีที่แล้ว +1

    Brandon, thank you so much. I am in a class and you explain it so much better than our instructor. You are the man sir.

  • @nbowes37
    @nbowes37 10 ปีที่แล้ว

    Thank you for taking the time to do this. You taking the time to explain this in a very clear and logical way. I understand your videos better than the ones produced by my school.

  • @kumaranjothikumar8176
    @kumaranjothikumar8176 11 ปีที่แล้ว

    Thanks a million! You have no idea how helpful this video has been! Thanks!! And that part on not giving up, it really was a boost for me!

  • @BjrnToreRakkenes
    @BjrnToreRakkenes 7 ปีที่แล้ว +5

    I have seen a lot of instructive videos but you deliver the best I have seen. I have only seen this one till now but I will definitely see more! Thanks!

    • @BrandonFoltz
      @BrandonFoltz  7 ปีที่แล้ว +2

      Thank so much! I appreciate you watching and learning. Glad you found them helpful. Keep on learning!

  • @jrxc5
    @jrxc5 9 ปีที่แล้ว

    thank u for your video I'm studying basic statistics to pass a DSST exam. Your video was great and very easy to follow. Keep it up!!!

  • @imzenmohmed7076
    @imzenmohmed7076 11 ปีที่แล้ว

    this is what i was looking for EXACTLY ! its rare to find something like this nowadays......
    thanks for your effort MR.

  • @sfernandezponce
    @sfernandezponce 2 ปีที่แล้ว

    This is the fifth video I watched on the topic because I could not get my head around it. I am grateful to have found your channel, and I will stick to your explanations going forward. Super clear and helpful. Extra points for the motivational message at the beginning...definitely puts you at ease...

  • @BrandonFoltz
    @BrandonFoltz  11 ปีที่แล้ว

    Oh you are welcome! But YOU are the awesome one :) Coming on here and making the effort to learn deserves the real praise. Hang in there! All the best, B.

  • @ayamsakata5004
    @ayamsakata5004 11 ปีที่แล้ว

    You explained it far better than my instructor. thank you so much. God Bless :)

  • @지워니S2
    @지워니S2 4 ปีที่แล้ว

    Thanks for your video. you are the best and so helpful. I had problems with figuring out these and now I got it 100% after watching your video. I love your explanations. thanks a lot

  • @katepawlak1467
    @katepawlak1467 9 ปีที่แล้ว

    The best statistics info on the web. Great details, very informative, well organized, good examples. Thank you!

  • @ifeomaoraemesi8074
    @ifeomaoraemesi8074 7 ปีที่แล้ว +1

    i love how you teach and how you start with encouraging words. u make the course so easy

  • @mahiji5735
    @mahiji5735 5 ปีที่แล้ว

    The easiest and the best explanation.

  • @erschwab08
    @erschwab08 8 ปีที่แล้ว

    Love your kind and patient approach. These videos are making stats make sense to me...so grateful!

  • @aurora95351
    @aurora95351 9 ปีที่แล้ว

    YOU ARE WONDERFUL! MY Professor gets paid for the work you do with us :-)

  • @ajitkumar15
    @ajitkumar15 10 ปีที่แล้ว

    I have been watching so many videos on TH-cam for my preparation of FRM exam. I had seen many videos but never gave any comments even though I liked it. But I do not know, this video is, so special that I have to give positive comments.
    YOU ARE THE BEST TEACHER .. I have experienced online .. Hope to see your some more videos.. thank you so much.

  • @yxs19882828
    @yxs19882828 11 ปีที่แล้ว +1

    10x better than those $200 textbook, thumb up!

  • @bengittos5990
    @bengittos5990 7 ปีที่แล้ว

    Hi Brandon
    I really liked your video. You are a fantastic teacher. Thank you for helping me to better understand covariances.

  • @yanniksimpson
    @yanniksimpson 6 ปีที่แล้ว

    Thanks man! I am sitting here trying to wrap my head about ICAPM and was just missing the basic statistical foundations in order to understand it. 2 of your videos and I understood it. Thanks so much! You've won my subscription!!!

  • @PsychAngus
    @PsychAngus 11 ปีที่แล้ว

    I would actually recommend that you (Brandon) keep the intro. Yes, it gets repetitive but it was actually your (very motivating) introduction that caught my attention. On the whole, I find your concept explanations lucid, which many academics/profs themselves can't even deliver. I like to videos very much and I'm using them to help me refresh my knowledge on stats. Keep those videos coming!

  • @MsChameleon4
    @MsChameleon4 7 ปีที่แล้ว

    I am crazy about your videos!!! You are an excellent instructor!!

  • @terellelowe5519
    @terellelowe5519 5 ปีที่แล้ว

    You dont understand how much I needed the beginning inspirational words. Thanks.

  • @0firelili0
    @0firelili0 3 ปีที่แล้ว

    Very late to the party, thank you for your videos - been feeling anxious about my maths skills, and your kind words and clear instruction has made me feel much better today

    • @BrandonFoltz
      @BrandonFoltz  3 ปีที่แล้ว

      You got this! And it's _never_ too late. Deep breathe and one foot in front of the other.

  • @MrGanninu93
    @MrGanninu93 10 ปีที่แล้ว

    Thanks. This tutorial was very very helpful. Im an IT student and just needed a quick tutorial about covariance. I read a paper which mentioned covariance and had no clue what it was. your tutorial was exactly what I was looking for. thanks again :)

  • @terrischmidt7535
    @terrischmidt7535 7 ปีที่แล้ว

    Thank you Brandon! I've really struggled to understand this concept in class, and you A) made me feel better with your pep talk and B) helped me understand it. You are an amazing teacher.

  • @malcolmseanhealey
    @malcolmseanhealey 11 ปีที่แล้ว

    Great resources.
    I'm ploughing through your videos for my basic statistics and eventual advanced statistics courses. I find this particularly interesting as a good explanation of the basic concepts and applications, before I start on the lectures, exercises and ultimately exams.
    I find it a very good way to go "back to basics". Thanks a bunch and please keep up the good (charity) work!

  • @JillJam23
    @JillJam23 10 ปีที่แล้ว

    Thank you Mr. Foltz, please continue to upload these videos, they're very helpful and easy to follow.

  • @sraaoyen
    @sraaoyen 9 ปีที่แล้ว

    Thank you for a great and well explained video. I am starting back at math after 15 years not doing any math, and what I need right now is baby steps. This video gave me just that, and I am looking forward to seeing the rest of you videos on stats.

  • @lukakorman9761
    @lukakorman9761 3 ปีที่แล้ว

    Deeply touched by this video. :)
    Great explanation! Finally I fully understand covariance.
    Thank you. :)

  • @sharprockstar
    @sharprockstar 8 ปีที่แล้ว

    Wow. Thank you so much. You clearly have been blessed with a gift for teaching. Thank you for sharing your gifts and wisdom. Your tutorials make stats class that much more understandable and applicable.

  • @mauricebaker3362
    @mauricebaker3362 9 ปีที่แล้ว

    I love his videos. I think they are very easy to follow. 100x better than my statistics prof could ever explain the concepts. But I really live for the intros and outros. What a friendly guy! I don't think I have seen any other videos that, regardless of how well they explain the content, give my quite the peace of mine that his do:)

  • @sulaimanmuhammad7529
    @sulaimanmuhammad7529 ปีที่แล้ว

    Good day Brandon. I have been learning statistics for years but my knowledge was still shallow. Your videos have helped me to understand statistics very well. The illustrations and explanations in all your videos are excellent and easy to grasp. Thank you and keep up the good work.

  • @TriangleRealEstate
    @TriangleRealEstate 10 ปีที่แล้ว +1

    Thanks so much for this video. It was part of assigned viewing for a Business Analytics program I'm taking, and was very helpful.

  • @Arokkh
    @Arokkh 10 ปีที่แล้ว

    great videos, have helped me big time in my MBA statistics class revisions

  • @yulianarom9585
    @yulianarom9585 6 ปีที่แล้ว

    Thank you so much!! I was struggling with this hard mathematic words all evening and you literally saved it! Your explanations are fascinating, I swear to god

  • @annaiankovskaia4180
    @annaiankovskaia4180 6 หลายเดือนก่อน

    Your explananation is so easy to understand! Thank you very much

  • @n.h.6139
    @n.h.6139 8 ปีที่แล้ว

    You don't know how thankful I am. Keep up the good work!

  • @LoveisHell85
    @LoveisHell85 5 ปีที่แล้ว

    Excellent video. Thank you very much. One of the better educational videos i've seen

    • @LoveisHell85
      @LoveisHell85 5 ปีที่แล้ว

      If you have time I would love to see more economics/accounting videos. Also data-analysis videos with R/Python, if you have interest in that. Thank you for the great content

  • @virginiawilson7758
    @virginiawilson7758 8 ปีที่แล้ว

    You are awesome teacher.... How I wish all teachers teaches like you. Keep it up Brandon Foltz. Hope to see video from you about Quality tools.

  • @baarchana
    @baarchana 8 ปีที่แล้ว

    Thank you for posting the videos. The concepts are very well explained and in a easy to understand manner. The videos are very helpful.

  • @paularaqeukai8818
    @paularaqeukai8818 3 ปีที่แล้ว

    Excellent presentation, very simple way to teach and understand Covariance

  • @tobynagreanu
    @tobynagreanu 8 ปีที่แล้ว

    best stats video everrrrrrrrrrrrrrrrrrrrrrrrrrrr!!!! way better than my stats professor

  • @Eureka2101
    @Eureka2101 10 ปีที่แล้ว +1

    Thank you, Brandon!
    You have a way to make your students understand each statistical concept very well.
    Well done! Great Job!!

  • @rajmohanpanadiwal1894
    @rajmohanpanadiwal1894 6 ปีที่แล้ว

    Outstanding quality ( Content + Presentation + Pace + Style); look forward for all the upcoming post and will see the previous ones.

  • @deepapandey9550
    @deepapandey9550 4 ปีที่แล้ว

    Thank you so much Brandon . I was so dumb in understanding statistics as it seems so difficult but now you just break every concept and it is so easy to learn. 👍

  • @GustavoMartinezgus81
    @GustavoMartinezgus81 7 ปีที่แล้ว

    Thank you so much for these videos, they are trully awesome!! Greetings from Honduras.

  • @Lilypad250
    @Lilypad250 8 ปีที่แล้ว

    Very well done. I've watched a lot of statistics videos lately and this is one of the best. I did notice the mistake when you said subtract instead of divide, though.

  • @joycehuang3461
    @joycehuang3461 8 ปีที่แล้ว

    You clarified many concepts for me! Thanks!

  • @unaivicente
    @unaivicente 6 ปีที่แล้ว

    Incredibly well explained, you are definitely the smart one in the room, my friend.

  • @prashant9988778899
    @prashant9988778899 9 ปีที่แล้ว +17

    Thanks a lot for your awesome presentation.Just that at 17:00 it should be "divide" and not "subtract"

    • @sirjamsession8179
      @sirjamsession8179 4 ปีที่แล้ว

      Well... you do need to (n-1) but then you divide the sum of the products by (n-1). But yeah he forgot to say divide.

  • @AnubhavChhabra
    @AnubhavChhabra 7 ปีที่แล้ว

    really need videos and teachers like you for better quality of education and as well as a great sense of motivation. Thanks A lot man :)

  • @anthonygoldie6961
    @anthonygoldie6961 4 ปีที่แล้ว

    Just the thing before a first trimester exam thanks for the great video :-)

  • @PaigeKKelly
    @PaigeKKelly 8 หลายเดือนก่อน

    Thank you!!! This makes so much more sense now! & Of course I love the stock example!

  • @Nissearne12
    @Nissearne12 6 ปีที่แล้ว

    Like this type of step by step explanation. Thanks!

  • @cassiekaycronemiller8955
    @cassiekaycronemiller8955 10 ปีที่แล้ว

    This helped me a ton! Thank you for explaining it so clearly and using examples....my instructor is so awful and I felt so lost...helped a lot! (BTW...shotgun target spread is not violent! I shoot trap for fun and its anything but violent :) )

  • @Videokeizah
    @Videokeizah 8 ปีที่แล้ว

    This is why I love youtube. Thank you so much.