Statistics 101: Null and Alternative Hypotheses Example Problems

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  • เผยแพร่เมื่อ 1 ธ.ค. 2024

ความคิดเห็น • 203

  • @pranavofindia
    @pranavofindia 4 ปีที่แล้ว +24

    I don't know how do TH-camrs get revenue from these ads work but I make sure to watch each and every ad completely as a token of appreciation for the wonderful work Brandon is doing for all of us.

    • @BrandonFoltz
      @BrandonFoltz  4 ปีที่แล้ว +8

      Thanks! I appreciate that. The advertiser only pays TH-cam if certain amount of the ad is watched or it is clicked on. Then that revenue is split with the creator. It's what makes this all possible.

    • @lspai8367
      @lspai8367 3 ปีที่แล้ว +2

      @@BrandonFoltz hello, I'm paying TH-cam Premium, does TH-cam give part to creators?

    • @ricardoafonso7563
      @ricardoafonso7563 3 ปีที่แล้ว

      .
      Advertisements should be an education in itself too
      .

    • @adityasatyam6300
      @adityasatyam6300 3 ปีที่แล้ว +2

      @@BrandonFoltz Sir the teaching being offered by you is simply unmatachable . I can undoutedbly say this channel is one of the best among statistical concepts .

  • @NastashiBlank
    @NastashiBlank 11 ปีที่แล้ว +15

    This just saved my life, I've been struggling with this in class for the past two weeks, but you made it sooo much easier to understand.

  • @S.Carton_Esq.
    @S.Carton_Esq. ปีที่แล้ว

    In my opinion, for basic/practical stats. this lecture series is one of the best on the internet. Thoughtful, and comprehensive, with complete mastery of the subject. Command without condescension. Thanks B.F.!!

  • @macutieshiba
    @macutieshiba 11 ปีที่แล้ว

    OMG I would click "like" hundreds times if I could! You're so good at explaining on the subject I was struggling to grip. Thank you so much!! I'm glad I found your video before the quiz. I'm going to review all your videos tonight~ Thanks and God bless you!

  • @msmyra80
    @msmyra80 11 ปีที่แล้ว

    I'm working on my doctorate in public health and needed a review of the null and alternative hypothesis. You have made my advanced biostats class much easier. This video saved the day!!!!! Thank you so much Brandon and please continue making videos!!!!!!! Excellent video!

  • @joeveach6518
    @joeveach6518 11 ปีที่แล้ว

    Thank you so much for these videos. I am in the 3rd week of a 6 week PSYCH3002 class. These videos, in under an hour, helped me understand more material than days and hours of reading textbooks and words of my instructor as well. These videos gave me some hope at a time when I really need some hope!

  • @BrandonFoltz
    @BrandonFoltz  11 ปีที่แล้ว

    Yes. In a One-Way ANOVA context, the null hypothesis states that all the group/column/treatment means are equal as you indicated. You are correct! :) - B

  • @bhupathireddyoruganti3687
    @bhupathireddyoruganti3687 10 ปีที่แล้ว +23

    Dear Brandon,
    Thank you very much for explaining this tricky concept with beautiful examples. Kudos to you. I really appreciate your generosity for making this video publicly available.
    regards,
    bhupathi

  • @nbdelilah04
    @nbdelilah04 11 ปีที่แล้ว +1

    Thank you so much for these videos. I am taking this class online in 4 weeks. Simply reading out of a book and attending a one hour lecture every week is not enough. These videos are making it feel like I am in a classroom. :)

  • @Gladeside2
    @Gladeside2 11 ปีที่แล้ว

    Thank GOODNESS for theses videos. I was struggling so much, super super super helpful. You're not speedy unlike most professors/ teachers which is wonderful.

  • @BrandonFoltz
    @BrandonFoltz  11 ปีที่แล้ว +1

    Oh thank you so much! Hang in there, you can do it. Just stay vigilant and believe in yourself. Not sure where you are in thr world, but don't stay up TOO late. :) All the best, B.

  • @BrandonFoltz
    @BrandonFoltz  11 ปีที่แล้ว

    Thank you Diana for your kind words. I am very glad you found the video helpful. Keep studying hard! - B

  •  11 ปีที่แล้ว

    This video finally cleared my doubts regarding how to state the null and the alternative hypotheses. This has always been a bit of a mystery to me and your video has made it very clear. I have to say that your videos are very good and I keep coming back to them to see what's next. Keep up your excellent work!

  • @BrandonFoltz
    @BrandonFoltz  11 ปีที่แล้ว

    Hello Salah! First thing to remember: the equal sign always goes with the null hypothesis H0. Second thing: hypothesis tests are not really about predictions. Either the null is supported (fail to reject) or it is not supported (reject). From what you wrote, it appears your null would be H0: greater than or equal to ___ and alternative H1 less than __. . If the test returns equal to or greater than, then you would fail to reject (support) the null H0.

  • @chapisydaddy
    @chapisydaddy 8 ปีที่แล้ว

    And you know what the funniest part about the first video on this subject was? That at the moment I found that video I was frustrated and you started talking about how we should be patient, can't remember the exact words you said but omg! You are by far the BEST teacher here and anywhere else on earth! You made me feel A LOT BETTER with your words! Thank you so much!!!! And now I have to get back to the continuation with this video! I am getting it now!! :)

  • @1986Macaroni
    @1986Macaroni 11 ปีที่แล้ว

    Great job with this and part one! I'm in a Six Sigma class, and I have NO background in statistics, so this video was a godsend for me! Thanks a lot!

  • @norabeh8359
    @norabeh8359 10 ปีที่แล้ว +1

    thank you for teaching Null and Alt Hypo so relevant for me to understand as i am not a very 'mathematical' person and after reading so many textbooks and lecture notes, finally your site made sense and i am so grateful. Please continue to help teach as i am not not so scared anymore for the coming exam. God Bless you! (Penang, Malaysia)

  • @mba-student2216
    @mba-student2216 10 ปีที่แล้ว

    Excellent teaching style. The double negative ("fail to reject" the null) is challenging because you are taught to be unambiguous when writing business requirements statements which includes removing double negatives. This is particularly important to people where English isn't their first language as it is a tough concept to grasp so over time you do learn to shy from ever using them and now, we are using them. Grrrrrr :-)

  • @jPiper0516
    @jPiper0516 9 ปีที่แล้ว

    I'm an applied learner when it comes to numbers but I still love them! Online grad learning doing my first inferential statistics class has been a challenge. I have to know WHY and HOW for it to sink in. Your explanations are exceptional in providing another point of view at learning. So many professors say..."well, this is what you read...there you go." honestly, without spelling it out in leyman's terms...it's quite difficult. You provide that bridge between the book and my brain. Thank you. I'll be following the other videos as well.

  • @shelleyholmes4239
    @shelleyholmes4239 10 ปีที่แล้ว

    Thank you Brandon, I AM smart and talented, but was seriously starting to doubt it, during the past 5 weeks of stats study! Your teaching style is fabulous and you make the concepts so easy to understand.
    I do hope lecturers watch your videos as part of their ongoing personal learning and commitment to being a better teacher. I especially like that you use $50 words rather than $5,000 words ... A sign of a true teacher rather than an educator.
    I am of the firm belief that the vast majority of students only fail because their teacher has failed to teach well. Since watching your videos I have a stronger belief that I will be passing. Thank you again
    Best wishes
    Shelley

  • @justabitnutty1403
    @justabitnutty1403 10 ปีที่แล้ว

    I have been struggling with statistics all semester but I have just discovered your videos which are so easy to understand, thank you!!

  • @srayangoswami8483
    @srayangoswami8483 8 ปีที่แล้ว

    How I wish that every professor/teacher be as encouraging and clear as you, while describing a topic.. I am out of statistics for a long time and have taken recent interest in it while being a working professional. Your videos are so crisp and easy to grasp. Thanks Brandon for making such good videos on statistics. :-)

  • @dianaluciano9510
    @dianaluciano9510 11 ปีที่แล้ว

    Thank you so much for posting this. i have been struggling with this for 2 weeks now and couldn't understand neither the book nor the professor ;( but you made it so clear. again thank you so much!!!

  • @ezma1923
    @ezma1923 10 ปีที่แล้ว

    Thanks!! This is very helpful. Taking statistics online for BSN bridge course for nursing and this class is 5 weeks. Truly appreciate your help and kind words of encouragement. ;-)

  • @egawy
    @egawy 11 ปีที่แล้ว

    you really have done a great job, the content is elaborated so smooth , yet it would be so helpful to refer in the end of your each video to the next video title , in order to draw a road map to who ever wants to know what is the right way of doing something.

  • @BrandonFoltz
    @BrandonFoltz  11 ปีที่แล้ว

    Hello and thank you for the message. I was not planning on doing any more time-series videos for a while. Unfortunately I have my hands full doing all my current videos which take a lot of time. Let me look into / review autocorrelation and things of that nature. But I cannot make any promises. All the best, B.

  • @gtiz5
    @gtiz5 8 ปีที่แล้ว

    Thank you, Brandon! Your videos must be some of the clearest on the subject. It is not easy to get your head around H0 and Ha ,for beginners in the field that is, and you manage to make it clear and easy to follow. Very helpful!!

  • @chapisydaddy
    @chapisydaddy 8 ปีที่แล้ว +6

    I LOVED EVERY MINUTE OF THIS VIDEO!

  • @ashiksingh413
    @ashiksingh413 10 ปีที่แล้ว

    he is excellent teacher.....................concept is clear to me..................very good

  • @BrandonFoltz
    @BrandonFoltz  11 ปีที่แล้ว

    Hi Jesumina! That is a single sample T-test. You can find those videos in my playlists as well. Single Sample T-test Parts 1 & 2. Hope that helps! - B

  • @sandeepvellala2247
    @sandeepvellala2247 4 ปีที่แล้ว

    Long live Brandon.people like you are much needed in this society.I am so thankful to you and your passion to teach is inspirational.

  • @nicolecorbo5191
    @nicolecorbo5191 10 ปีที่แล้ว +3

    I've been in my statistics class for five weeks and was lost, you have helped a lot !!!!!!!

  • @edwardcarriero99
    @edwardcarriero99 9 ปีที่แล้ว

    Unreal. I have been struggling with this for 5 weeks, and here you go, explaining it to me within an hour. I guess it's true about what Einstein said when he said that if you can't explain something simply, then you don't understand it. Says a lot about teachers these days. Thank you for this. Thumbs up, and subscribed. You are my new best friend, lol.

  • @MrLuitfred
    @MrLuitfred 11 ปีที่แล้ว

    this has been the best video on hypotheses, I will recommend it to my students. Sehr net.

  • @tokioobsessed1983
    @tokioobsessed1983 9 ปีที่แล้ว

    I tell everyone about your channel! Your tone and the way that you explain, is very reassuring. Thank You.

  • @ashu6014
    @ashu6014 7 ปีที่แล้ว

    Thank you so much for every single video that you have put up. The concepts are crystal clear and your examples are brilliant!
    Thanks a ton, Brandon!

  • @GahanaThiyaga
    @GahanaThiyaga 10 ปีที่แล้ว

    I have got a clear picture about the null and alternative hypothesis, Thank you Brandon for your Great lesson. I was struggled a lot to understand hypothesis before watching your sessions

  • @tracymorrison2355
    @tracymorrison2355 10 ปีที่แล้ว +3

    Thank you! I wish my professor explained this as well as you did. I feel so much better.

  • @joanynel4028
    @joanynel4028 9 ปีที่แล้ว

    Excellent video. I really struggle with basic statistics but this has helped me tremendously. The explanations are easy to understand, and what I really like is the fact that Brandon does not assume previous knowledge of the topic, and therefore explains al the concepts in depth.

  • @Surabhee12
    @Surabhee12 11 ปีที่แล้ว

    Hello Brandon! Thank you so much. You are doing a great job. It's really hard to come across selfless people such as yourself. Thank you once again.

  • @prabhudaskamath1353
    @prabhudaskamath1353 4 ปีที่แล้ว

    Lovely explanation. Now this is crystal clear. Thank you Brandon..

  • @dhelevationconsulting4174
    @dhelevationconsulting4174 9 ปีที่แล้ว

    I will be sharing your videos with all of my colleagues! And I always listen to the end to hear the uplifting words! They are like water in the desert! Lisa

  • @carlydavies4697
    @carlydavies4697 7 ปีที่แล้ว

    I think you are a marvellous educator. Thanks!

  • @heliini88
    @heliini88 9 ปีที่แล้ว +1

    Thank you for the video, it helped me understand the topic!
    I really appreciate that you take the subject to a human level. This really helps us students to learn it from the beginning!

  • @farzanr.2019
    @farzanr.2019 11 ปีที่แล้ว

    Thank you for information that you provided at second video and all clear examples. I could understand them easily. I still need to read more and more to understand this basic hypothesis in order to apply them for my thesis

  • @nafisachowdhury3687
    @nafisachowdhury3687 6 ปีที่แล้ว

    I wonder why I didn't watch your videos since the beginning of this course. It's so helpful! Thank you so much!

  • @Valessimo1
    @Valessimo1 9 ปีที่แล้ว

    You make Statistics so interesting and exciting! Thank you so much!!!

  • @ceruleanscarab
    @ceruleanscarab 9 ปีที่แล้ว

    Thank you so much for your videos, the way you explain things is so clear and not-at-all-terrifying. But even more importantly, thank you for your kind words of encouragement. I needed them so much today, and you made me calm down enough to actually absorb what you were saying rather than pull out the usual mental block.

  • @Vikram.Notebook
    @Vikram.Notebook 8 ปีที่แล้ว

    very well explained. My concept about the Null hypothesis and alternative hypothesis is now clear.

  • @Tipasa100
    @Tipasa100 9 ปีที่แล้ว

    Excellent. I was having a hard time with hypothesis testing. You made it clear to me. Thank you!

  • @chriscoutu8276
    @chriscoutu8276 9 ปีที่แล้ว

    Great class to refresh on our statistical capabilities.
    Thank you.

  • @girijeshjha
    @girijeshjha 7 ปีที่แล้ว

    I am glad I stepped on your video series. Super helpful! Thanks for the marvelous job you have done!!

  • @nishatrupom
    @nishatrupom 10 ปีที่แล้ว

    I am so grateful for your spontaneous lectures :)

  • @MrJscott77
    @MrJscott77 9 ปีที่แล้ว

    It has been helpful. I am checking out the remainder of the videos.

  • @shreddersengupta7384
    @shreddersengupta7384 4 ปีที่แล้ว

    Great video , Love the way the contents are delivered, subscribed !!!

  • @lakscool1
    @lakscool1 11 ปีที่แล้ว +1

    Thank you very much for sharing the details in such a simple format

  • @rfgeor
    @rfgeor 11 ปีที่แล้ว

    Excellent video clip and the one before this one. Direct my students to it and they like it. Thanks for the effort!

    • @BrandonFoltz
      @BrandonFoltz  11 ปีที่แล้ว

      Thanks Robert! Where do you teach? All the best, B.

  • @niteshjha1019
    @niteshjha1019 10 ปีที่แล้ว

    Thanks a Sir...These videos are great help for FRM preparations. Lots of blessings.

  • @nawafalrasheed109
    @nawafalrasheed109 4 ปีที่แล้ว

    YOU ARE THE BEST, Brandon!

  • @rabinsgaudel9958
    @rabinsgaudel9958 10 ปีที่แล้ว

    Simple and very effective tutorials. Thanks

  • @DontoverthikiT
    @DontoverthikiT 7 ปีที่แล้ว

    your videos are excellent ! helping so many people. you are contributing for making the world a better place.Thank you!

  • @ehsannadjarantoosi3391
    @ehsannadjarantoosi3391 10 ปีที่แล้ว

    It was one the amazing video lecture I have ever watched in my whole life.
    Thank you

  • @davids5309
    @davids5309 10 ปีที่แล้ว

    In an age where virtually everything is exchanged for money, producing these videos and sharing your knowledge for free is indeed beyond being NOBLE. I hope all the fellow students who have showered you with praise in the comments will keep this in mind when they are successful in their future endeavors.

  • @omarhefni9390
    @omarhefni9390 9 ปีที่แล้ว

    LOL , My lecturer does not speak English properly . She is not a native speaker and i have to take the course in English . Thanks for helping us . you are a legend :)

  • @lisachristen5901
    @lisachristen5901 9 ปีที่แล้ว +1

    Thank you so much for the clarification!! This stats class is overwhelming me at times!!!

  • @BrandonFoltz
    @BrandonFoltz  11 ปีที่แล้ว

    You are very welcome! - B

  • @divyashekar6373
    @divyashekar6373 3 ปีที่แล้ว

    Very well Explained in a simple manner 👍

  • @mohnishkumar6368
    @mohnishkumar6368 4 ปีที่แล้ว

    Hey Brandon , just wanted to thank you for this amazing video, it's been of great help.👍

  • @MandalorV7
    @MandalorV7 10 ปีที่แล้ว

    Thanks for the videos. This will really help me pass my class.

  • @yessilovelife5111
    @yessilovelife5111 10 ปีที่แล้ว

    Thank you thank you thank you for making these videos! Please keep making them, it is the only way I am getting through my stats class.
    ...and thank you for the message of positivity, it helps to hear it =)

  • @chiranjeevireddy9616
    @chiranjeevireddy9616 11 ปีที่แล้ว

    Thank you very much, It is too clear and too much elaborative

  • @sidb1517
    @sidb1517 10 ปีที่แล้ว

    Awesome video. It saved my semester. :)

  • @tetseovechovo
    @tetseovechovo 10 ปีที่แล้ว

    Very straight and clear... thanks a lot.

  • @niv2419
    @niv2419 7 ปีที่แล้ว

    Great video! Found it very helpful! Extra credits for mentioning Man Utd as one of you examples :)

  • @patriciabell1379
    @patriciabell1379 7 ปีที่แล้ว

    Another great lesson! Thank you, Thank you!

  • @elenaperez691
    @elenaperez691 10 ปีที่แล้ว +2

    Thank you Brandon,
    I really appreciate your explanations and videos. They really help with understanding the difference between the two hypotheses. Do you have any videos on p-values?

  • @netmadefamous
    @netmadefamous 10 ปีที่แล้ว

    Super Cool...Why I didn't see this video before ?.....Thank you so so much ......

  • @kathygriffin7120
    @kathygriffin7120 10 ปีที่แล้ว

    Thank you for the encouraging words and for making this understandable. Great job.

  • @sarahalamoudi487
    @sarahalamoudi487 8 ปีที่แล้ว +1

    i can't thank you enough, thank you for being amazing

  • @alexandras7984
    @alexandras7984 7 ปีที่แล้ว

    Great video! Thanks for explaining this so well.

  • @shivibhatia1613
    @shivibhatia1613 11 ปีที่แล้ว

    what can I say. I left stats 3rce in middle but ur video make stats look like pizzas with extra cheese so delicious... Awesome and thanks a ton

  • @Mushtaq522
    @Mushtaq522 6 ปีที่แล้ว

    I now know the H1 and the H0. Thank you brother

  • @susmitroy7001
    @susmitroy7001 5 ปีที่แล้ว

    Very well explained the concept. Thanks a lot!!

  • @reynacampos9354
    @reynacampos9354 10 ปีที่แล้ว

    Thank you!! You did a wonderful job!

  • @arifjabry4096
    @arifjabry4096 9 ปีที่แล้ว

    Thanks mate really helpful for my Quantitative class. Finals next week and i think am good to go

  • @maryburke927
    @maryburke927 10 ปีที่แล้ว

    excellent video, as I am one of those struggling stats students.

  • @milligangirl
    @milligangirl 11 ปีที่แล้ว

    Great Job Brandon! Thank you!

  • @myfunspace1
    @myfunspace1 9 ปีที่แล้ว

    Thank you very much. So helpful and well explained.

  • @hkinley55
    @hkinley55 9 ปีที่แล้ว

    Thank you! Great presentation, easy to understand. Now i'm getting some where

  • @kiranreddy1229
    @kiranreddy1229 7 ปีที่แล้ว

    Please correct me if i'm wrong in the way i'm thinking about this problem.
    The average attendance is already given to be 74k . So we take it as an assumption and put it straight in the null hypothesis.H0>=74k
    As the analyst wants to test if the the attendance has decreased we form our null hypothesis as H1

  • @tamerellamushi4200
    @tamerellamushi4200 9 ปีที่แล้ว

    Thank you so much for these videos, they're very helpful. Keep up !!!

  • @eaweltmer
    @eaweltmer 10 ปีที่แล้ว

    Loved the video, helped me out a lot. Thank you so much.

  • @orangekiss519
    @orangekiss519 9 ปีที่แล้ว +4

    I loved this video! I have a question regarding example 3. I assumed the null hypothesis would be, Ho = 74,961. how were we supposed to know that Ho was greater than or equal to 74,961? What am I supposed to be looking for in the question to indicate the difference?

    • @ivancarlson953
      @ivancarlson953 5 ปีที่แล้ว +1

      liz smart because the claim is that it has decreased, that is, the alternative hypothesis. Therefore, the null hypothesis must be the opposite and contain an equal sign. Thus the null is greater than or equal to.

  • @gratefulnessmoment928
    @gratefulnessmoment928 3 ปีที่แล้ว

    clear up my super confusion. Thanks

  • @natedagrrreat8248
    @natedagrrreat8248 9 ปีที่แล้ว

    Love these videos. Thank you so much

  • @nusaipamubarak9456
    @nusaipamubarak9456 11 ปีที่แล้ว

    Thank you so much . This was a great help!

  • @swapneelshidhaye5061
    @swapneelshidhaye5061 5 ปีที่แล้ว

    Thanks Brandon. Really helpful

  • @veeranagoudayaligar
    @veeranagoudayaligar 10 ปีที่แล้ว

    Nice explanation for testing null and alternative hypothesis.
    thank you

  • @Zhrek123
    @Zhrek123 9 ปีที่แล้ว

    Thanks so much, and thank you for the encouragements! Great video!

  • @alotan2acs
    @alotan2acs 10 ปีที่แล้ว

    Nice and clear explanation. 1 point does not come to me intuitively though: when testing that farm area has increased/attendance has decreased, it seems more natural to find data that would support your hypothesis. Thus if I were to do this informally, I would compare the means of farm sizes now to farm sizes in the past and see if there was an increase. If so, I can infer that farm sizes have probably increased. With attendance, I would look at the mean attendance now and see if it is lower than previous means.
    It seems somewhat odd to have your assumption be the opposite of what you'd predict (i.e. that farm size has not changed), only to collect data so that you can reject this assumption. Why would I not directly have my null as my prediction (i.e. that farm sizes have increased), then collect data that allows me to not reject the null? This seems less roundabout.
    Thanks!