Calculate the P-Value in Statistics - Formula to Find the P-Value in Hypothesis Testing

Поделиться
HTML-код
  • Опубликовано: 22 дек 2024

Комментарии • 525

  • @LindyHoppingMidwife
    @LindyHoppingMidwife 7 лет назад +1217

    I haven't understood a single word that my statistics teacher has said to us this entire semester. Yet I understand this perfectly, on the first time. Not all heroes wear capes. Thank you good sir.

    • @edwintatum5963
      @edwintatum5963 6 лет назад +12

      LindyHoppingMidwife I thought the same thing! Angel in disguise... lol

    • @vyourworstnightmare
      @vyourworstnightmare 6 лет назад +5

      same here

    • @MathAndScience
      @MathAndScience  6 лет назад +46

      Thanks so much!

    • @Aikman94
      @Aikman94 5 лет назад +12

      He is an amazing professor. 10/10 on his teaching skills

    • @oliverzhu3001
      @oliverzhu3001 5 лет назад +7

      no way to believe that I coundn't understand this in a 50 min lecture but 15 video here

  • @adibraiyanhaque4823
    @adibraiyanhaque4823 5 лет назад +134

    You're the savior of thousands of students across the globe. I thank you, sir, for such good content and lecture.

  • @chinwemgbejiofor8284
    @chinwemgbejiofor8284 2 года назад +5

    I have actually watched 4 of his videos in a stretch and still not getting bored. The Professor is a genius. He has done so much to demystify what some lecturers teach and most importantly what most students believe statistics is all about. I really appreciate the importance and relevance of ICT.

  • @justinfeathers8089
    @justinfeathers8089 2 года назад +21

    I'm working on my master's of statistics and I've got to say this video was incredibly helpful. Some of the jargon and theory used in my classes are a bit too abstract - I really appreciate the concrete examples!

  • @koikahi
    @koikahi 4 года назад +58

    I rarely comment on videos... but absolutely love his style..in 20 minutes..the concept is deeply deeply ingrained in my mind. He is passionate and he cares about the topic and his students. God bless you and the world have more teachers like you....we would all be much better students then. Sincere thanks again.

    • @fikruhabte8166
      @fikruhabte8166 2 года назад +1

      Great instructor. Statistics and econometrics made easy to understand.

  • @alicesillusion
    @alicesillusion 2 года назад +1

    I’ve never been good at Maths - always my weakest subject at school. Now doing a Masters and a module on stats/quantitative research. This is much clearer than the textbooks and even the lecturer videos! Thanks so much for all that you do ❤️

  • @balukuroben7458
    @balukuroben7458 3 года назад +3

    most of the statistics lecturers in universities are so proud that they dont deliver concepts well. I love your approach which makes it easy for students to understand better. Thanks and God bless you

  • @jennifercarter7722
    @jennifercarter7722 Год назад +1

    I am doing statistical analysis in grad school and needed a refresher. You are such an incredible instructor and I am so grateful for you! This allowed a visual representation of the P-value in a way that really allowed me to understand WHY 0.05 is used. Thank you so much!

  • @trinitalattimore664
    @trinitalattimore664 4 года назад +2

    Thank you soooo much. I am taking statistics for my ED.D program end of June before Fall Semester and I am sitting here at my home work station at 54 y.o. re-learning Statistics with you. Good solid teaching. Could you recommend a tutor just in case. I like that you go slow and explain each step slowly. I am smiling and hope to get an 'A.' I still need a tutor on STAND BY. Smiling.

  • @ramiozil9860
    @ramiozil9860 Год назад +1

    We need professors like you in Canada, I really appreciate every minute you’ve spent doing those videos.
    Idk how to thank you

  • @Flynn1411
    @Flynn1411 4 года назад +60

    Thanks for saving a confused engineering student during the quarantine.

    • @Stonebridge_
      @Stonebridge_ 4 года назад +1

      Josue Izaguirre !!!!

    • @abdifatahfarahhamud6426
      @abdifatahfarahhamud6426 3 года назад +1

      Its 4 years before, may to not see your message 😂😂😂

    • @Flynn1411
      @Flynn1411 3 года назад

      @@abdifatahfarahhamud6426 I know, but still

  • @sivashanmugam8624
    @sivashanmugam8624 4 года назад +2

    This is the first ever comment i am writing for RUclips Video. Simply Excellent !!! You have the Expertise, Skill to Teach. And what a Passion to explain. You are absolutely Fantastic. Was literally struggling to understand the Concept from other Teachers and Books. You have made it Simple and understand it to Core. Thank you for teaching and Please keep continuing Great Job.

  • @TheShaunico
    @TheShaunico 6 лет назад +9

    You are so awesome! I've been struggling in my class all year because my professor only reads what is on his power points which are very similar to the information in the book. You have broken it down and made out so easy for me to understand. I was thinking that I was just terrible at at statistics. Thank you for giving me my confidence back. I wish I would have found your videos sooner. I wish you would have been my professor. Thank you so much for taking the time to make these videos and putting them on RUclips.

  • @sayakbhattacharjee9669
    @sayakbhattacharjee9669 10 месяцев назад

    Finally, I can differentiate between z , p value, level of significance. Your lecture proved that most of the lecturers themselves are not confident about the core concept and that's why they can't explain. Thank you very much

  • @feyiplus4500
    @feyiplus4500 6 лет назад +24

    Taking public health and it includes statistics. Didn't realise that it did, I would have taken something else as I am terrified of maths. My statistics lecturer basically reads the slides to us and expects us to do the rest of the work, I find your videos to be quite explanatory. The alien language I was seeing earlier on in Stats lecture suddenly makes sense and I am proud to say I can now speak alien language too.

  • @mikalhiebert4000
    @mikalhiebert4000 2 года назад

    I don't think I have ever commented on a youtube video, but you just saved me. Your content is amazing, clear, and concise. Thank you, you angel in disguise.

  • @Joe_Fauci
    @Joe_Fauci Год назад +3

    I never thought I could understand math this well, but your videos make it so easy to follow along and learn!

  • @nm1978
    @nm1978 3 года назад +1

    My God, you are the best greatest teacher on earth, I don't know if there is or not anyone else that I know that teaches so clearly in detail, you should be an example to the entire world's education systems. The entire world education systems must be changed, this is how everything should be taught , instead of long boring lectures, or reading books that are so hard just to understand what they are trying to tell you, because the way books are written is very official language which I abhor, a simple concept that can take one minute to understand takes hours, because the way these evil books are written , the concepts of science, math and everything else are not hard to learn and are actually fun to learn, if it wasn't for these official languages that are used in all books, I am so sick and tired of them.
    This is how everything should be taught in all schools. Simple, fun and clear. They should learn from you, you are the best and made a big difference in my life, truly American teachers are the best too at teaching. But offcourse your ways of teaching makes it the 👌 best.

  • @ziyezhu6742
    @ziyezhu6742 5 лет назад +8

    his lectures are straightforward and easy to understand, even you get distracted sometimes, you won’t get lost.

    • @Aikman94
      @Aikman94 5 лет назад

      He is an EXCELLENT teacher. If I ever teach, I wanna be like him!!!

  • @kyoungsub
    @kyoungsub 5 лет назад +7

    Great examples! I couldn’t find any videos so far that explain what “More Extreme” actually means. I was so confused whether it means greater or smaller. Now I finally found one! Thank you so much.

  • @SarahCrookall
    @SarahCrookall 5 лет назад +4

    Thank you for taking the time to break things down into very basic parts. Like others have mentioned here this video really helped my understanding after having tried to understand using different resources. I think that the reason why so many people are commenting that they understand is because its broken down in a really comprehensive manner. Teaching doesn't have to be convoluted to prove you can figure something out (as some in academia seem to think). Many thanks!

  • @alananalyst7795
    @alananalyst7795 10 месяцев назад

    I swear I've been watching like 20 videos and still didn't understand P value but after this video it just clicked! I am so happy, I have seminar next week I can go there confident! You are awesome teacher much much better than my stats professor

  • @halimatukamara628
    @halimatukamara628 Год назад +1

    I have been taught Hypothesis testing during my masters course it was difficult for me to comprehend but just listening to all your videos has made it so easier for me to abreast and digest. Well done for the great lectures

  • @nedaari1
    @nedaari1 4 года назад +1

    Sir...I have an MAT and MBA from an elite schools. You are talented. The analogies, reasoning and explanations are all on point. Thank you.

  • @AshleyGodwin
    @AshleyGodwin 6 лет назад +7

    THANK YOU! I watched 4 or 5 of your videos, took lots of notes, did practice problems, and I just made my very first 100% on a stats exam EVER! I can't thank you enough. I am taking this class for the second time and wish I found these videos sooner. Thank you so much!

    • @MathAndScience
      @MathAndScience  6 лет назад +4

      You are very welcome! I'm seriously proud of you, good job!!!

  • @gloriinher40s
    @gloriinher40s 2 года назад

    I have 2 weeks left of my 8 week applied statistics course and I just absorbed more info (and by absorbed I mean I actually GET IT instead of memorizing it!) in 22 minutes than I have for the past month and a half. I'm disappointed that I didn't find this channel sooner (and I looked!).. so far I have an A in the class, but it's been by the skin of my teeth and incredibly frustrating because it's online. I ask my professor questions, and his answers just confuse me more. I really want to finish strong and I think these videos are going to help me. I will be binging them all!
    You have a genuine gift for teaching, I can't thank you enough for sharing your knowledge with the rest of us.

  • @learnlearn8230
    @learnlearn8230 4 года назад +5

    Amazingly and clearly explained , I have struggled to understand from other sources, blogs, channels and videos as well. You have really explained it so well that instead of cramming, I am able to visualize the meaning. Really Thanks in tons and appreciate your tremendous contribution to education.

  • @Goldpoint3295
    @Goldpoint3295 3 года назад

    OMG! The expression '' more extreme'' perfectly understood. Where have you been all my life? Thank you sir!

  • @JONTHEWHEREHOG
    @JONTHEWHEREHOG 2 года назад +1

    Godsend. I don't know why I couldn't find a good explanation of this anywhere else but I am thankful to have found this video

  • @rachisabella
    @rachisabella 4 года назад +5

    All I can say is thank you, thank you, thank you! This series is a life-saver.

    • @MathAndScience
      @MathAndScience  4 года назад +1

      Thank you so much!
      Jason, MathAndScience.com

  • @philipcho231
    @philipcho231 4 года назад +71

    Its really depressing when you're watching stat videos like this at midnight because you don't get what a word your teacher is saying.

    • @ayonsaha7963
      @ayonsaha7963 3 года назад +1

      that's life brother hehe

    • @FatherOfHades
      @FatherOfHades 3 года назад +2

      we pay them to teach us nothing lmao, my professor doesnt even do lectures, the TAs do.

    • @AnyThngButOrdinary
      @AnyThngButOrdinary 15 дней назад

      Try430am for exam on In two days

  • @OnlineSchoolofEnglish
    @OnlineSchoolofEnglish 3 месяца назад

    You're a HERO! I *finally* understand what on earth my professor had been talking about throughout the term! THANK YOU!

  • @elizabethvarghese5511
    @elizabethvarghese5511 4 года назад +3

    I am benefited by this video. I am a distant education student of psychology and I have to learn statistics for the sake of doing research. The textbook does not explain in a simple, detailed way. But your lecture gives a good insight. May you do more such good lectures. Love from India.

  • @GreenAnarchy3
    @GreenAnarchy3 7 лет назад +16

    You're an angel sent from heaven. Thank you so much man

  • @MT-we3fw
    @MT-we3fw 4 года назад

    I have gone through a lot of videos on Stats but your teaching method is the best....

  • @MariaSanchez-bf3jt
    @MariaSanchez-bf3jt 3 года назад

    i just want to thank you ! i understood none of these concepts before listening to you

  • @mosama22
    @mosama22 Год назад +1

    Man, I swear you are a f****** LEGEND, do you know how many stops I had before landing here, with no still no clue what P- Value is.
    Thank you man, REALLY thank you 😊😊😊😊

  • @Dnd21210
    @Dnd21210 4 года назад

    I have to agree with the other comments. 5 weeks into my stat class and I'm confused on where the math went. I narrowed it down to not understanding the p-value.... excellent video. Thank you for being so clear.

  • @andrewwilkerson1344
    @andrewwilkerson1344 7 лет назад +154

    this man saved my life

  • @MsZarate88
    @MsZarate88 6 лет назад +1

    thank you, I am in graduate school in a psychology major and am taking statistics. These online videos are excellent.

  • @231wildy
    @231wildy 4 года назад +1

    Congrats. Well done videos. I had difficulties understanding textbooks. Personally, I teach finance and I never felt that textbook writers make a diligent effort. But, this series of videos demonstrated very deep conscious effort at delivering complex concepts simply. Puts all textbooks to shame. Thanks once again. I immediately understood, while having my coffee. Without realising, i spent over an hour just following through. Great work.

  • @hkejriwal
    @hkejriwal 3 года назад +3

    You are awesome.. feeling feeling lucky to have found such a brilliant and motivated teacher. A big big thank you!

  • @ronenTheBarbarian
    @ronenTheBarbarian 10 месяцев назад

    Despite speaking English for more than 40+ years, I only realized now the real difference between Z and T. Thank you!

  • @prodTyeDye
    @prodTyeDye 3 года назад

    The marjortity of my math teachers have always failed to explain why and how we use this in the real world which always leaves out key education. They have only ever focused on how to get to the answer. Luckily people like this man are here to save us!

  • @kiriakipoursaitidou2732
    @kiriakipoursaitidou2732 5 лет назад +3

    " And I will get to that, whenever I get to that". Love this attitude of that angel face human being

  • @hommy1614
    @hommy1614 Год назад

    This man is so gifted at teaching mathematics!! I know that when I see his face, and the dry erase markers, and a clean board, that I can learn the concept. :)

  • @yutaohuang6946
    @yutaohuang6946 4 года назад

    The clearest explanation I have ever received about P-value

  • @virgilnanaquewitung2272
    @virgilnanaquewitung2272 5 лет назад +3

    Damn, I don't know if it's me or your technique but it is all making sense. I think your teaching is spot on!
    Good teaching!

  • @frusstom
    @frusstom 4 года назад +2

    I was so lost and crying by the point I found this video. I finally understand it thank you so much.

  • @brendavalencia.
    @brendavalencia. 2 года назад +1

    I wish I had found you sooner. I learned so much from you. my stats teacher is nice but just so hard to understand. great job!

  • @zara4078
    @zara4078 5 лет назад

    I had a very hard time understanding the p-value since no one could explain it well but I understood it perfectly well only by watching your video once. Thanks a lot .

  • @simplysassy7340
    @simplysassy7340 6 лет назад +6

    Thank you so much for these video's. Can't say how simplified you've made something, that I built up in my head. Can't thank you enough they've really helped on the evening before my exam. 🌺

  • @carolpierre6273
    @carolpierre6273 3 года назад

    fallen in love with your teachings, its incredible how clear it is Thank you

  • @princeofange1
    @princeofange1 4 года назад +1

    It's been 3 weeks of trying to find someone I can understand thank you.

  • @patriciavanderpool3370
    @patriciavanderpool3370 2 года назад

    p-value is the one component that I am struggling with in Statistics right now. Thank you for your video!!

  • @sampatmali6894
    @sampatmali6894 2 года назад

    After 15 years I understood meaning of p value
    thanks sir
    Once again Thanks Sir

  • @annabellewington7570
    @annabellewington7570 5 лет назад

    Finally someone who can explain this !!!!! Best video on this topic

  • @vivekthaker7970
    @vivekthaker7970 Год назад

    Hands down the best review I've seen on this. Thanks.

  • @yasminamin1893
    @yasminamin1893 5 лет назад +4

    I have to say .. you are ammmmmazing... omg you saved my life. I was going to fail in my exam.. Thank you soo nuch

  • @wh33l6r
    @wh33l6r 5 лет назад +31

    This is brilliant teaching! If there's a Pedagogic Hall of Fame somewhere, this guy's statue should be at the front door!

  • @kristysanvicente8284
    @kristysanvicente8284 6 лет назад

    This man is God's gift to math. This is THE ONLY reason I understand anything.

  • @ФилиппЦемахман-б4и
    @ФилиппЦемахман-б4и 4 года назад

    the best teacher and explanation ever! hello from Russia!

  • @Kristina-vp4pe
    @Kristina-vp4pe 11 месяцев назад

    Thanks!

  • @leejohnson197733
    @leejohnson197733 Год назад +1

    how would i show in a graph a comparison of 2 sets of data? nominal number i want majority of samples to fall in is 25, first set of data is mean 22 sd 2 -- second data set is mean 23 sd 1, would i just find the z value for each and show which ever shaded area was larger shows which has the best results?

  • @ericgrosch8073
    @ericgrosch8073 2 года назад

    11:04 The lecturer gives the formula: for z = (x=bar -- mu)/(square toot of n), i.e., sample standard deviation. In so doing, he is conflating the terminology for sample-mean with terminology for population-mean and z with sigma, i.e., population-standard deviation, and he's omitting the very important summation-sign, capital sigma). The terminology for population-standard deviation is lower-case sigma = square root (population-variance, lower-case sigma exp 2) and lower-case sigma exp 2 (population variance) = summation of (x -- mu) exp 2)/n. The terminology for sample-standard deviation and sample variance is somewhat analogous but different: lower-case s (sample-standard deviation) = square root of s exp 2 (sample-variance) and s (sample-variance) = (summation of (x - X-bar)exp 2)/(n - 1). z is the number of standard deviations that the data-point, x, lies away from the mean, mu for the population-mean, X-bar for the sample-mean). z is NOT the conflated formula for hybrid standard deviation that the lecturer gives.

    • @ericgrosch8073
      @ericgrosch8073 2 года назад

      Typographical errors: 1st line: z = (x=bar -- mu)/(square toot of n) should have read: z = (x-bar -- mu)/(square root of n). 4th and 5th lines: s (sample-variance) should have read: s exp 2 (sample-variance) = etc.

    • @ericgrosch8073
      @ericgrosch8073 2 года назад

      I was hoping that the lecturer would explain why the population-variance has the divisor, n, whereas the sample-variance has the divisor, (n--1), but there's no hope of that because he's confused over the even more fundamental conceptual differences between population and sample.

  • @drz1093
    @drz1093 6 лет назад

    thank you!!! Yesterday the p-value was killing me softly... today there is hope I will survive the statistics course.

  • @katewoodley9103
    @katewoodley9103 4 года назад +2

    Thank you for your videos ,it’s really helping me to understand statistics . I’m so appreciative,thank you

  • @cas3837
    @cas3837 2 года назад

    I have severe ADHD and it has taken me forever to find a video that worked!

  • @afreedamohideen3522
    @afreedamohideen3522 5 лет назад +2

    My statistic professor should learn from you how to teach students. Love from Sri Lanka

  • @newbie2743
    @newbie2743 7 лет назад

    Every Statistic students should be subscribing to your channel

  • @kinshulsharma7400
    @kinshulsharma7400 4 года назад +4

    Where were you when I was doing my graduation in Statistics 😭😭
    Thank you so much sir and I really mean it :')

  • @onyameabasa
    @onyameabasa 3 года назад

    20:12 p(z> 2.78)=p(z 2.78) to find the area to the right?

    • @H4XOR23
      @H4XOR23 3 года назад

      Why do we use 1-p? Can you tell me?

  • @danielrnuttall
    @danielrnuttall 6 лет назад +158

    @15:23 what you all came here for

  • @perlailyas4346
    @perlailyas4346 3 года назад

    the way you explain things is just so easy to understand compared to my professor!. thank you so much

  • @hamzahafeez2909
    @hamzahafeez2909 6 лет назад

    Yeah man you are great.... You cleared my concept about p-value.... Indeed you are a great teacher... Greetings from Pakistan

  • @UltromanTheTacoman
    @UltromanTheTacoman 7 лет назад

    This kind of stuff just doesn't stick in my head. I might put up a 10 hour version of this thing. Jokes aside, this is gold for me! Thank you!

  • @BANKO007
    @BANKO007 4 года назад

    So, since the mean is at 0, mu=0. But in each example, mu was not zero. Whether you do a right tail test or left tail test is fixed by the outcome of the Z statistic test? Or did I miss that the absolute value of Z is used and given a negative sign for the left tail test and a positive sign for the right tail test? (All bearing in mind that Z as described in the formula is a single number and not a distribution).

  • @cindykarina23
    @cindykarina23 4 года назад

    having a stats quiz tomorrow and you just saved my life!

  • @JS19190
    @JS19190 4 года назад +1

    What a great teacher, incredible. You're basically saving my grade :)

  • @RaviSingh-xx2wq
    @RaviSingh-xx2wq 2 года назад

    Best explanation that I have come across. Kudos

  • @ogbeidenelson8843
    @ogbeidenelson8843 5 лет назад +7

    Please I’ll love if you tutorials on hypothesis testing are in a sequence ..

  • @parulsharma7572
    @parulsharma7572 4 года назад

    Your lectures are great and way ahead of their time as when they are created.

  • @Karen-nc5ix
    @Karen-nc5ix 3 года назад

    The only video I could find that could clearly explain p-value.

  • @roy761017
    @roy761017 7 лет назад +1

    I don't understand why do we reject the null hypothesis when the P-value is low. I see some website says it means "sufficiently inconsistent". But why?
    When P-value is low, doesn't that means the probability of obtaining a "more extreme" sample is low? Why do we reject the null hypothesis?

  • @jkincaid6303
    @jkincaid6303 4 года назад +3

    In p(Z > 2.78), you suggest "flipping the sign" to calculate P, by saying p(Z < -2.78). Why not rather look up 2.78 on a positive Z table and calculate p(Z = 1 - .99728) = .0027?

    • @quantitativemethodsacademy9319
      @quantitativemethodsacademy9319 3 года назад

      You are right !

    • @arpitashetty6631
      @arpitashetty6631 2 года назад

      @@quantitativemethodsacademy9319 Can you help me find the p value? I just have mean and SD values from a study, and I'm trying to find out it's p value. Is it possible?

  • @marygalakbergin8690
    @marygalakbergin8690 3 года назад

    OMGosh... my professor spoke jibberish, but you make it very clear! Thank you!

  • @yasmeenq7507
    @yasmeenq7507 4 года назад +1

    That is a very helpful video that made me understand the P-value very well. Thank you!!

  • @qigong1001
    @qigong1001 3 года назад

    @7:30. Normally when calculating Z value we just divide by the standard deviation (as we first start learning it) . But scientists divide standard deviation by the square root of sample size. Can you explain why that is?

    • @abumansaray7
      @abumansaray7 2 года назад

      I think you are getting standard deviation and variance mixed up. Standard deviation is the square of the variance.

  • @junk4swapnil
    @junk4swapnil 7 лет назад +1

    Thank you for nice explanation. I am back to study after 12 years for my Six sigma exam. Helped a great deal.

  • @prashantbapuji3785
    @prashantbapuji3785 Год назад

    Excellent way explaining a confusing concept !! Thank you very much !!

  • @Maivyn
    @Maivyn 5 лет назад +17

    I can't believe I'm learning all of this for free

  • @SabrinaXe
    @SabrinaXe 10 месяцев назад

    Our p value is from the alternate hypothesis ~The probability of getting a value more extreme than your sample.
    The extreme values of our alternate
    14:42

  • @jouvaxie8034
    @jouvaxie8034 3 года назад +1

    Amazing video. Great refresher on extremely important, fundamental concepts.

  • @maximus2978
    @maximus2978 Год назад

    One of the best video of p value, thank you very much

  • @shapsonmwanza6388
    @shapsonmwanza6388 7 лет назад +12

    i wish i had found this earlier, its so helpful. great work sir!

  • @celestinenavalayomasinde6308
    @celestinenavalayomasinde6308 6 лет назад

    AM ONLY 2 MINS INTO THE SESSION AND I CAN TELL ITS GONA BE A GOOD RIDE. KEEP ON SIR

  • @duncanchirchir8092
    @duncanchirchir8092 4 месяца назад

    A good dancer knows the right time to leave the stage,,it's incredible so good and understandable❤

  • @prashantbapuji3785
    @prashantbapuji3785 Год назад

    I was thinking to subtract the probability ( Z value from standard normal distribution table ) from 1 to get p-value ? Can you please clarify sir ? Thanks!!

  • @ngapesur
    @ngapesur 8 месяцев назад

    Hello can you place show how to identify p value from the table please ,I just heard you saying from the table and am confused you check on it from the table

  • @atpole818
    @atpole818 5 лет назад

    I really really REALLLY appreciate your videos. You have an excellent way of explaining the material