Hypothesis testing: step-by-step, p-value, t-test for difference of two means - Statistics Help

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  • Опубліковано 3 гру 2024

КОМЕНТАРІ • 230

  • @DrNic
    @DrNic  11 років тому +167

    You can thank my son for the subversive elements and anime influence. We think viewing the videos several times helps with the learning, and making it entertaining helps.

    • @smeekshakoundal734
      @smeekshakoundal734 4 роки тому +5

      you are amazing . thanks

    • @axcel2727
      @axcel2727 3 роки тому +6

      lol used hypothesis testing for his video to teach hypothesis testing
      BRILLIANT

    • @mareenabowman7495
      @mareenabowman7495 3 роки тому +3

      He did a great job!

    • @DrNic
      @DrNic  3 роки тому +1

      @@mareenabowman7495 Indeed he did. Here is a link to his Patreon if you are interested in seeing more of his work. www.patreon.com/Suede

    • @cookiduhh8601
      @cookiduhh8601 3 роки тому +2

      this is so funny for me, i love it! and great informative video thank you :D

  • @kingsleyseow4715
    @kingsleyseow4715 4 роки тому +30

    I'm crying. I thought I could've never understood this until I came across this video. Thank you Dr. Nic!

    • @DrNic
      @DrNic  4 роки тому +4

      I am so glad I could help. I hope my other videos also help you out.

    • @shohelnetworld811
      @shohelnetworld811 4 роки тому

      Asslamualaikum.Good morning/afternoon/evening..
      chat.whatsapp.com/KZhh35wHlNJIt4INfdPkau
      In this group I will share all kinds of research Materials without any cost.If you think It's need for you.You can join this group.you can share your materials for helping others.helping others its the main purpose of the study.spread your knowledge in the whole world.
      I believe God is one Allah.
      Allah likes to help others.
      we have some experts who know better analyse.If need we will provide contact number.
      You share this link difference groups and also in Social media.
      You can send me ur email to get research slides..only slides.. We provide free...
      Part 2....
      🌴🌴🌴
      God is one.. Allah.we must obey one God..
      Allah is Almighty..
      We will die one day..the world will be finished one..but akhirat means die after day not will be finished.
      We should follow the quran..
      The Quran is the best Book in the world.
      Dont ignore its..

  • @Ynn0025
    @Ynn0025 8 років тому +30

    You are an angel! I almost die understanding this subject but then you came! Thank you soooooooooooooooooooo muchhhhhh, God bless :))))

  • @lad812
    @lad812 12 років тому +10

    I love your videos and I understand how much effort it takes to create them. Thanks for sharing publicly!

  • @haylie7931
    @haylie7931 Рік тому +2

    Bless you and your family, still helping after a decade! Loved the mew too

    • @DrNic
      @DrNic  Рік тому

      Thanks. We enjoy helping

  • @sulisueeeeee0553
    @sulisueeeeee0553 2 роки тому +4

    8 years old but this video is still amazing

    • @DrNic
      @DrNic  2 роки тому +1

      I'm happy to hear that. One day I will update them, but for now they are still serving a useful purpose.

  • @sigmabishop5212
    @sigmabishop5212 5 років тому +18

    3:53. She actually showed a pic of Pokemon mew. Done for the day.

  • @DrNic
    @DrNic  11 років тому +6

    The full version is little more than the cost of a cup of coffee! We are trying to make a living doing this. Go on - help us keep providing great materials by buying us a cup of coffee and a cupcake (that is buy the full version!)

  • @hermanfs164
    @hermanfs164 7 років тому +7

    This is the best explanation I ever seen understanding this topic. Many thanks!

  • @Chadillac12
    @Chadillac12 9 років тому +9

    These are extremely helpful. I'm taking a graduate level statistics course online and refer to these to explain difficult concepts. I also love the fact that you referenced Pokemon in the video. :)

  • @sriracha2009
    @sriracha2009 12 років тому +4

    I love how you used Mew. Great sense of humour and educational video! thanks!

  • @jacquelineo3748
    @jacquelineo3748 3 роки тому +3

    OMG I've been working on this for TWO DAYS! This video explained what I needed to know perfectly! Wow, I'm so thankful for this.

    • @DrNic
      @DrNic  3 роки тому +1

      That is great to hear.

  • @peace5003
    @peace5003 6 років тому +3

    Even great lecturerers fail to explain hypothesis..thanks for making it crystal clear..

  • @dumbfoxmedia
    @dumbfoxmedia 8 років тому +17

    That Death Note reference tho... 10 outta 10.

  • @momomoro1989
    @momomoro1989 10 місяців тому

    Thanks a bunch!! The explanation is top notch! :)))

  • @charlottebrown6815
    @charlottebrown6815 2 роки тому

    A life saver for my assignment, thank you

    • @DrNic
      @DrNic  2 роки тому

      Pleased to hear it

  • @louisakouzapas5094
    @louisakouzapas5094 2 роки тому

    Thank you for making this very helpful video series with examples!

    • @DrNic
      @DrNic  2 роки тому

      You're very welcome!

  • @taisaichan9568
    @taisaichan9568 2 роки тому

    This video really helped understand the subject. Thank you so much Dr Nic!

    • @DrNic
      @DrNic  2 роки тому

      Happy to hear it

  • @Soundforsoul88
    @Soundforsoul88 4 роки тому +2

    Knowledge and humor combined, what could be better than this? :))))

  • @xFersureMatt
    @xFersureMatt 11 років тому +91

    HAHAH was I the only one to the see "mew" pokemon?! that's how I'd love to be taught.. is in correlation to pokemon (:

    • @turbotek6242
      @turbotek6242 10 років тому +9

      mew 2!

    • @shohelnetworld811
      @shohelnetworld811 4 роки тому

      Asslamualaikum.Good morning/afternoon/evening..
      chat.whatsapp.com/KZhh35wHlNJIt4INfdPkau
      In this group I will share all kinds of research Materials without any cost.If you think It's need for you.You can join this group.you can share your materials for helping others.helping others its the main purpose of the study.spread your knowledge in the whole world.
      I believe God is one Allah.
      Allah likes to help others.
      we have some experts who know better analyse.If need we will provide contact number.
      You share this link difference groups and also in Social media.
      You can send me ur email to get research slides..only slides.. We provide free...
      Part 2....
      🌴🌴🌴
      God is one.. Allah.we must obey one God..
      Allah is Almighty..
      We will die one day..the world will be finished one..but akhirat means die after day not will be finished.
      We should follow the quran..
      The Quran is the best Book in the world.
      Dont ignore its..

  • @kanchithakkar8471
    @kanchithakkar8471 2 роки тому

    Thanks a lot. Extremely helpful

    • @DrNic
      @DrNic  2 роки тому

      Glad it helped!

  • @tg-us3hw
    @tg-us3hw 2 роки тому +2

    imagine paying £30k for degree just to end up learning this from a 7 min video from 2011

    • @DrNic
      @DrNic  2 роки тому

      That's funny

  • @Crowmeo
    @Crowmeo 8 років тому +18

    I have got to try some Choconutties.

  • @mgh_munich8305
    @mgh_munich8305 7 років тому +1

    I love the cartoons and the humour that comes with it! :D Great video!

  • @nooretauheed8665
    @nooretauheed8665 5 років тому +18

    6:47
    P is low, Null must go.. 😂 😂 😂

    • @DrNic
      @DrNic  5 років тому +1

      I didn't think of it, but it is such a useful little rhyme.

  • @26MbtD
    @26MbtD 3 роки тому +1

    it's amazing to see how smart humans can be. amazing explanation doctor Nic. thoroughly enjoyed your teaching.

    • @DrNic
      @DrNic  3 роки тому

      Thank you kindly!

  • @GiveIt2AY13
    @GiveIt2AY13 12 років тому

    i think im falling in love with those who made this great video

  • @wenyichu3486
    @wenyichu3486 7 років тому +2

    Thank you so much for sharing this- I am a total new beginner in this!

  • @thechristianhuey
    @thechristianhuey 12 років тому

    Well done. I'm a graduate student about to take my exit exam in research methods. I wish I had seen this a year ago.

  • @statzsinger
    @statzsinger 12 років тому

    I have been sharing the link with my research methods students since finding this video. It is fun and helpful. Thank you!

  • @vaishalivignesh3963
    @vaishalivignesh3963 3 роки тому +5

    Thank you for this Dr. Nic! It was extremely articulate and clear. It was really helpful as well :)))

    • @DrNic
      @DrNic  3 роки тому

      Glad it was helpful! I found it helped my students to have a clear structure.

  • @allisonfernandez7941
    @allisonfernandez7941 10 років тому +3

    Great explanation- thanks!!

  • @chonniw6971
    @chonniw6971 8 років тому +6

    Aww Mew just makes the whole idea of statistics better ahahaha

  • @H2Kzer0
    @H2Kzer0 10 років тому +1

    Subliminal Pokemon was a good touch. Lol!

  • @katiethepossum6788
    @katiethepossum6788 3 роки тому +1

    Thank you so much I am a first year in Psychology and the humour really helped me understand this better

    • @DrNic
      @DrNic  3 роки тому

      I'm so glad! Some people think the humour is distracting, so it's good to hear it helped. My son did the editing of this one and he has a great sense of humour.

  • @dh92dh
    @dh92dh 10 років тому +3

    Thank you soooo much for this. Really helpfull. This is the way to teach.

  • @DrNic
    @DrNic  12 років тому +1

    Hi Faiz
    This is meant to support people in statistics courses who might be having difficulty. If you are interested in learning statistics from the start, maybe you could buy our app and work through the concepts from the beginning. Or watch the playlist in order? This is not the first in the series.

  • @alinaqvi1864
    @alinaqvi1864 11 років тому

    Excellent and brilliant videos. Still hate the statistics but these video are helping me survive. How n where to get the full version.

  • @umaralhajiabubakar4869
    @umaralhajiabubakar4869 6 років тому +1

    Nice, the steps were made easier. Thanks

  • @DrNic
    @DrNic  11 років тому

    Thanks Sarah D. I'm happy you like it. We would love it if you would use the "Rate my app" on the app as we are seriously short of reviews.

  • @morticianspuppet
    @morticianspuppet 8 років тому

    NO WAY! HAHA I ADORE THE REFERENCE!

  • @DrNic
    @DrNic  11 років тому

    Glad to hear it. We have an iPhone app, AtMyPace:Statistics. And an on-line course for Year 13 NZ Statistics students at the statistics learning centre.

  • @vishnu8899
    @vishnu8899 2 роки тому

    Wow this is so awesome and holistic! Thank you Dr.Nic....Will def recommend the channel to others

    • @DrNic
      @DrNic  2 роки тому

      Glad to hear it. Thanks

  • @azar8538
    @azar8538 7 років тому +1

    Thank you very much. Your work is much appreciated.

  • @GingerSpider01
    @GingerSpider01 6 років тому +5

    Great video and explanation! but... I sear to god you drew Mello from the show Death note, and the fact you used chocolate for the character is even better! XD

    • @DrNic
      @DrNic  6 років тому +3

      I can neither confirm nor deny the borrowing of Mello. ;)

  • @DrJack55
    @DrJack55 12 років тому

    This video is excellent. I'm in a introductory statistics class and the book used by the instructor is useless and confusing. Thanks for the help!

  • @inv8890
    @inv8890 5 років тому +1

    I saw what happened at 3:51. hahahahahahahahahaha you are so cute and nice. Lots of love for explaining the concept so clearly, and in such a soothing voice with a clear English accent. Relief...

    • @DrNic
      @DrNic  5 років тому +1

      Thanks. It is a team effort, with my son providing some of the laughs. NZ accent.

  • @ishiitapal
    @ishiitapal 4 роки тому

    thankyou for the explaination

    • @DrNic
      @DrNic  4 роки тому

      You are welcome

  • @shamshers5008
    @shamshers5008 4 роки тому +1

    Great as video. I am happy now i know this finally. 👍👍👍👍 Thank you.

    • @DrNic
      @DrNic  4 роки тому

      Glad it was helpful!

  • @DrNic
    @DrNic  13 років тому

    @MrBattyyy Thanks - we do our best. Tell your friends!

  • @DrNic
    @DrNic  12 років тому

    At present there are just the twelve videos. The one about choosing which test to use covers regression and chi-sq to a certain degree. We've done regression in two videos. We also have an online course which has little quizzes to go with each of the videos. You can find it at our site.

  • @madscimag
    @madscimag 12 років тому +1

    This was amazing! Thank you!

  • @DrNic
    @DrNic  9 років тому

    Alex Delarge
    Because your comment is "linked" I cannot reply to it specifically, so here is your reply in the general stream. You are correct - this video is designed to be part of a statistics course, along with teacher input. X-bar is the sample mean. Statistical significance means that we have evidence that the effect we see in the sample is also in the population. Alpha is the level of significance - the proportion of time we are okwith being wrong if we reject the null hypothesis. Myu is the population mean and x-bar is the sample mean. The p-value is the probability of getting a result as extreme as this if the null hypothesis is true. You could watch our video, understanding the p-value, to get a better idea of what a p-value is. And Understanding Confidence intervals gives an idea of what sampling is all about. Maybe even buy our app - AtMyPace statistics.

  • @TheNegk
    @TheNegk 9 років тому

    Thank you so much. This video was so awsome. Could you just explain the reason for a positive sale in 6':51"? is it 'positive" because of one tailed test?

    • @DrNic
      @DrNic  9 років тому

      Negar Mehr Yes, if it were two-tailed, we would just be saying that there is a difference.

  • @howcanhowler4766
    @howcanhowler4766 4 роки тому

    do you have a microwave going on in the background?

    • @DrNic
      @DrNic  4 роки тому

      Probably not. I made this video nine years ago and sound has never been my strong point.

  • @hnofclbrips
    @hnofclbrips 4 роки тому +5

    Thats actually Mello from DeathNote with the chocolate, nice reference :D

    • @DrNic
      @DrNic  4 роки тому +2

      Maybe...

  • @tamarelouw
    @tamarelouw 4 роки тому

    Really enjoyed this, it gave me the insight into two tailed tests and why it was important. A Wits student studying second year Economics

    • @DrNic
      @DrNic  4 роки тому

      Glad it was helpful!

  • @tiffanie401
    @tiffanie401 11 років тому

    Well put together video. I'm looking to begin making such videos for my students and this was very inspiring. Thank you.

  • @ucheezeneche731
    @ucheezeneche731 5 років тому +1

    EXCELLENT. Thank you so much

  • @yambemtenjings3538
    @yambemtenjings3538 5 років тому +1

    simple and excellent and useful
    ...love from Manipur

    • @DrNic
      @DrNic  4 роки тому

      Thank you for your kind words. I think some stats teachers make things more complicated than they need to be.

  • @cbmiller1774
    @cbmiller1774 8 років тому

    Very helpful with my statistics class and these concepts. Please talk a little slower though, for those of us taking notes. Thank you so much!

  • @williammorris1
    @williammorris1 12 років тому

    Thank you! This has helped a lot!

  • @MrBattyyy
    @MrBattyyy 13 років тому

    Nice Presentation ...Well Explained

  • @anniechen6593
    @anniechen6593 10 років тому +1

    Thank you for the video!!!so easy to comprehend!!!!

  • @ragadomary
    @ragadomary 9 років тому +1

    thaanks

  • @bonitachica786
    @bonitachica786 11 років тому

    Fantastic videos!!! And app!!

  • @matthewdavies408
    @matthewdavies408 10 років тому

    I don't normally comment on videos but this really helped thank you!

  • @otiebrown9999
    @otiebrown9999 6 років тому +1

    Excellent:
    Null & and alternative.

  • @maielwakil5997
    @maielwakil5997 10 років тому +1

    Thanks! Very clearly

  • @dr.gv.alvinpremsonpremson8621
    @dr.gv.alvinpremsonpremson8621 2 роки тому

    Dr.G.VENKATASALAM
    Roll No: 32
    Very useful session. It shows that how to teach in effective manner. Thank you.

    • @DrNic
      @DrNic  2 роки тому

      Thanks and welcome

  • @loraimamartino1813
    @loraimamartino1813 3 роки тому

    You are amazing.

    • @DrNic
      @DrNic  3 роки тому

      Aww. That is so sweet. I’m really happy I could help.

  • @in2itiv2
    @in2itiv2 12 років тому

    Thanks! Very clearly ...and interestingly stated!

  • @Vikermajit
    @Vikermajit 8 років тому +1

    Brilliant video presentation on a complex and important topic. Thanks a lot and god bless.

  • @hihi135100
    @hihi135100 6 років тому +1

    Amazing videos, thanks for all the help :)

  • @LeKhang98
    @LeKhang98 2 роки тому

    Haha your son's comic style is funny I love it. And thank you for your video. Very informative and easy to understand to newbies like me.

    • @DrNic
      @DrNic  2 роки тому +1

      Glad you enjoyed it! He IS funny.

  • @dangerlurk
    @dangerlurk 11 років тому

    I am unable to purchase the app from Qatar.
    :(
    Any other solution?

  • @nurulainsufinabintimohamad1702
    @nurulainsufinabintimohamad1702 4 роки тому

    Thank you very much! Online lectures nowdays were tough , glad I found your video

    • @DrNic
      @DrNic  4 роки тому

      Glad it helped!

  • @raeanndumas1321
    @raeanndumas1321 5 років тому +1

    3:51

  • @bebla8381
    @bebla8381 4 роки тому +2

    why didnt i find you earlier

    • @DrNic
      @DrNic  4 роки тому +1

      A common regret!

  • @Ian-ei3jy
    @Ian-ei3jy 11 років тому

    Great Mew referance

  • @noordeeb333
    @noordeeb333 8 років тому

    Thank you Dr. Nic!

  • @ausernamewasrequired
    @ausernamewasrequired 9 років тому

    excellent video, very helpful!

  • @diegobarletta19
    @diegobarletta19 4 роки тому

    Hi Dr. Nic, when a certain treatment is a standard of care and you want to compare it with a new one, is it right to put it this way? " H0: A is better than B; H1: A is worse or equal than B", cause in this example H0 A=B means there is no effect, but not always the hypothesis corresponded to that, right?

    • @DrNic
      @DrNic  4 роки тому +1

      Hi Diego. You need to have the equality in the null hypothesis. H0: The new treatment is the same as or worse than the old treatment. H1: The new treatment is better than the old one.

    • @diegobarletta19
      @diegobarletta19 4 роки тому

      @@DrNic thank you

  • @CheyenneNL
    @CheyenneNL 10 років тому

    Thank you very much for this video. It helped a lot.

  • @mysisterskeeper9593
    @mysisterskeeper9593 4 роки тому

    Very helpful! Great

    • @DrNic
      @DrNic  4 роки тому +1

      Glad it was helpful!

  • @mandeep3.14
    @mandeep3.14 3 роки тому

    this was entertaining 👌

    • @DrNic
      @DrNic  3 роки тому +1

      Glad to hear it. I think it helps learning if things are a bit funny.

  • @JoyJoy-jv7ss
    @JoyJoy-jv7ss 10 років тому

    Great explanation:)

  • @boxiangwang
    @boxiangwang 4 роки тому

    It is really good. I appreciate your sharing.

    • @DrNic
      @DrNic  4 роки тому

      I'm glad you like it. I like that it is helping people.

  • @JamesSCavenaugh
    @JamesSCavenaugh 10 років тому +1

    Fisher's significance testing and Neyman-Pearson hypothesis testing have been combined into a bastardized hybrid which is pervasive in science. This video is a good explanation of the bastardized testing of which neither Fisher nor Neyman nor Pearson would have approved. Space is too short to point out the flaws in this video, so I suggest that you do a search on "Fisher's significance test vs. Neyman-Pearson hypothesis test" and follow the links.

  • @yanpinghuang8154
    @yanpinghuang8154 10 років тому

    thanks.

  • @SimranKaur-zm7nl
    @SimranKaur-zm7nl 2 роки тому

    is it possible to calcualte the p-value without excel when given T and df? Thank you

    • @DrNic
      @DrNic  2 роки тому +1

      You could use statistical tables to get an approximate value.

  • @ehababdulburalfakhory801
    @ehababdulburalfakhory801 12 років тому

    thank you very much for your explain

  • @lindseyyan8671
    @lindseyyan8671 4 роки тому

    Thank you so much for providing this videos!! Love them!! I got questions on 1 tail vs 2 tail test. 1) how to determine if 1 tail or 2 tail test should be used? 2) when doing 1 tail test, should significant level be changed? (from 0.05 to 0.025?) 3) Is it possible that p(1 tail) < 0.05 or 0.025 but p(2 tail) > 0.05? If so, what decision should be made? Many thanks!!

    • @DrNic
      @DrNic  4 роки тому

      You are welcome. When you have an idea of which way the result occurs, you use one-way. In the video, understanding the p-value, Helen is only concerned if the choconutties have too few nuts. This is a one-way test. The p-value for a 2-tail test is exactly twice that for the 1-tail test so you do not change the significance level. 3. Yes that is entirely possible and you will need to think about the context when drawing any conclusions.

  • @0174d3
    @0174d3 12 років тому

    Yeh I agree the pictures are very clever and hilarious, great job :)

  • @KarlaKiper
    @KarlaKiper 8 років тому

    Thanks for sharing!

  • @Kakirachan
    @Kakirachan 2 роки тому

    Is that Mello

    • @DrNic
      @DrNic  2 роки тому

      Maybe….

  • @fernandol3421
    @fernandol3421 9 років тому +1

    Charming and helpful video
    Excited to see Mew, yes I noticed.

  • @porl3004
    @porl3004 4 роки тому

    Thank you 🙏🏻

    • @DrNic
      @DrNic  4 роки тому

      You’re welcome 😊

  • @Campbell.Garry1
    @Campbell.Garry1 7 років тому

    2:27

  • @swagbiker322
    @swagbiker322 3 роки тому

    Thank you so much

    • @DrNic
      @DrNic  3 роки тому

      No problem