What Is P Value In Statistics In Simple Language?

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  • เผยแพร่เมื่อ 1 ต.ค. 2024
  • In statistics, the p-value is the probability of obtaining results at least as extreme as the observed results of a statistical hypothesis test, assuming that the null hypothesis is correct
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ความคิดเห็น • 141

  • @krishnaik06
    @krishnaik06  3 ปีที่แล้ว +70

    Guys at 3:34 just a small update The p-value is not interpreted as a probability that the null hypothesis is true. It is the probability of observing a value of the test statistic that is as or more extreme than what was observed in the sample, assuming the null hypothesis is true. Dont Forget to subscribe my vlogging channel to see more motivational videos. Happy Learning!!
    th-cam.com/video/H9Db7ADfcXI/w-d-xo.html

    • @debarunkumer2019
      @debarunkumer2019 3 ปีที่แล้ว

      Sir can you please make a tutorial on the application of fastai framework ?

    • @ayushmanmisra1768
      @ayushmanmisra1768 2 ปีที่แล้ว +2

      can you please explain what is then the difference b/w level of significance(alpha) & p-value

    • @rajdama205
      @rajdama205 ปีที่แล้ว

      Also one more update, p-value isn't significance value. We calculate significance value based on observations and then compare it with p-value to decide if Null Hypothesis is accepted or rejected.

    • @rishirajsutar6571
      @rishirajsutar6571 10 หลายเดือนก่อน +3

      you need to delete this entire video rather than just correcting yourself in the comment section. A student who is new in this domain can easily get misguided.

  • @vivekkr44
    @vivekkr44 3 ปีที่แล้ว +6

    Hey Krish,
    The concept of p-value and null hypothesis in this video is completely wrong. Please don't mislead the students by teaching wrong concepts in public forum.
    No offense, but please correct this because one of my students got confused by referring this video.
    Thanks!

  • @VijayasarathyMuthu
    @VijayasarathyMuthu 3 ปีที่แล้ว +8

    Ha ha.. Thanks. All along I thought fair coin simply means a coin which has a head and tail. I mean not a dummy coin like heads or tails on both sides 🙈

  • @arlinkinpark6769
    @arlinkinpark6769 6 หลายเดือนก่อน +2

    I am a doctor...and i bet very few medico knows about p value concept like you explained..we also need p value in biostats

  • @JaydeepSinghTindori
    @JaydeepSinghTindori 3 ปีที่แล้ว +2

    P is not significant leve. It should be like alpha. P is the estimated probability for that 5% at given samples number.

  • @vivekjoshi3769
    @vivekjoshi3769 3 ปีที่แล้ว +26

    Hey Krish please make 10 mins videos like this more on short topics. They are helpful for beginner in statistics like me.
    Thanks & appreciate time you spent on great content.

  • @Arslanqadri
    @Arslanqadri 2 ปีที่แล้ว +41

    Incorrect definition of p value. It is not the probability of null to be true. It is the probability of finding an extreme point if null is true.

    • @thelife1919
      @thelife1919 ปีที่แล้ว

      Yes, it is not correct.

    • @Karthik-s4y5f
      @Karthik-s4y5f ปีที่แล้ว

      See pinned comment bro

    • @sherwinantony3512
      @sherwinantony3512 9 หลายเดือนก่อน

      (Doubt) Probability of finding extreme point where ?

    • @AjitKumar-vm8xr
      @AjitKumar-vm8xr 8 หลายเดือนก่อน +1

      Not extreme point but getting same result of sample again and again if null hypois true

  • @hassansaeed9540
    @hassansaeed9540 2 ปีที่แล้ว +1

    Totally wrong concept its not the level of significance

  • @MirGlobalAcademy
    @MirGlobalAcademy ปีที่แล้ว +1

    Nice

  • @dhruv3344
    @dhruv3344 2 หลายเดือนก่อน +1

    Definition: The p-value is the probability of obtaining a test statistic at least as extreme as the one observed, given that the null hypothesis is true.
    Interpretation: It quantifies the strength of the evidence against the null hypothesis. A smaller p-value indicates stronger evidence against the null hypothesis.

  • @bestofbest258
    @bestofbest258 ปีที่แล้ว +8

    Understanding p-value took so much time since other posts and videos don't involve animation of distributions in their explanations. I will say this is the greatest explanation one can ask for. Thank you so much, Krish!

  • @dr024
    @dr024 ปีที่แล้ว

    No no no… pvalue is not the probability that the null hypothesis is correct.
    Get your sources correctly. You will never find a book authored by statisticians that pvalue is the probability that the null hypothesis is true because it is NOT.

  • @anandlearningacademy9022
    @anandlearningacademy9022 3 ปีที่แล้ว +15

    I especially loved that keyboard example...It's a kind of refreshment of concepts after watching your videos...

    • @fksons4161
      @fksons4161 3 ปีที่แล้ว

      It got me cracking. All the people who have taught me never explained this concept as clear as he did. Wonderful teacher

  • @35pri2ish
    @35pri2ish 3 ปีที่แล้ว +2

    p value is not the significance level :/

  • @keerthansimhachowdary9804
    @keerthansimhachowdary9804 7 หลายเดือนก่อน

    I'm confused like why you performed 2 times, i.e. 60,67. I understood that 67 lies in tail region, but before why 60 was taken?.Anyone, please explain

  • @shreshthsharma2001
    @shreshthsharma2001 ปีที่แล้ว

    The Coin in Sholay movie,, had p value less than 0.05 ,,and rejected the the null hypothesis,,, and rest is history

  • @Indhumathi-e9w
    @Indhumathi-e9w 9 หลายเดือนก่อน

    Krish ji, Understood the concepts, but not able to connect this example to the thing that we do hypothesis testing in sample to understand population behaviour.... pls someone clarify

  • @AjitKumar-vm8xr
    @AjitKumar-vm8xr 8 หลายเดือนก่อน

    Null hypothesis definition is wrong
    It is getting same result if null hypothesis is true conditional probability is there

  • @rachitsingh4913
    @rachitsingh4913 2 ปีที่แล้ว +2

    Most clear explanation on p-values and hypothesis.

  • @bhatkti_aatma
    @bhatkti_aatma 3 ปีที่แล้ว +1

    Can I get an admission in bsc data science after 12th commerce in St Xavier's College Mumbai and I've mathmatics in optional subject ??? please please please please please please please please please please please please please please please please tell me...

  • @funtuber9155
    @funtuber9155 ปีที่แล้ว

    Thank you so much, but just to share I slept like 8 times and each time i rewinded from 7:10

  • @niranjannazarkar555
    @niranjannazarkar555 3 ปีที่แล้ว +4

    Excellent way of Explanation

  • @imteyazahmad9616
    @imteyazahmad9616 3 ปีที่แล้ว +4

    Thanks for making this video.
    Pvalue is one of the most important part in Data Science.

  • @minakshiboruahnitmz
    @minakshiboruahnitmz 7 หลายเดือนก่อน

    H0 means fair coin but the p is probabilty of head difference in the defn.

  • @humble_man30
    @humble_man30 2 ปีที่แล้ว

    Are you from andhra pradesh/telengana??

  • @kylesnodgrass1
    @kylesnodgrass1 ปีที่แล้ว +1

    Finally a video that explained what is happening. I managed to work out a definition from summarising your video.... thank you.
    95% of all results will be average. However, 5% or less would be classified as extraordinary. Therefore, if your experiment gave results which are 5% or less than likely to occur on average, the independent variable you have manipulated is significant, because it changed the results from average to extraordinary.

  • @better_notes182
    @better_notes182 หลายเดือนก่อน

    Dude your the best, literally thanks a ton

  • @Alishayadav-fc6ev
    @Alishayadav-fc6ev 7 หลายเดือนก่อน

    06/03/2024 great information sir!

  • @hardikvegad3508
    @hardikvegad3508 3 ปีที่แล้ว +3

    Why does sample mean uses n-1; Please Krish answer this one too.

    • @krishnaik06
      @krishnaik06  3 ปีที่แล้ว +3

      Soon I will explain in a video

    • @hardikvegad3508
      @hardikvegad3508 3 ปีที่แล้ว +1

      @@krishnaik06 thank you very much sir 🙌🏻

    • @imteyazahmad9616
      @imteyazahmad9616 3 ปีที่แล้ว +1

      @@krishnaik06 I had tried to find this question but still I am confuse why n-1

    • @shrikantdeshmukh7951
      @shrikantdeshmukh7951 3 ปีที่แล้ว +1

      Df of freedom ? N-1? You are talking about?

  • @AmandeepSingh-yo1it
    @AmandeepSingh-yo1it 2 ปีที่แล้ว

    2:47 in the term of frequentist approach

  • @nandinimishra3632
    @nandinimishra3632 7 หลายเดือนก่อน

    Please make a video on the Mann Kendall test...

  • @kaushikreddy6419
    @kaushikreddy6419 3 ปีที่แล้ว +1

    The above fair coin according to null hypothesis we should perform one-tail test.

  • @manojbanoth5942
    @manojbanoth5942 3 ปีที่แล้ว +1

    We most of the time take 95% region of bell curve for not rejecting the null hypothesis, because of it is nearer to two standard deviations or anything else?

  • @sagarparab6973
    @sagarparab6973 ปีที่แล้ว

    meanse between the confidence interval

  • @mustanganiruddh2745
    @mustanganiruddh2745 ปีที่แล้ว

    OH god that was so easy ? thank you bhai

  • @abde1581
    @abde1581 3 ปีที่แล้ว +1

    Please make video on ANOVA

  • @paragzade3408
    @paragzade3408 3 ปีที่แล้ว +1

    Wish you had chosen a continuous variable rather than a categorical one!

  • @thudimillasaiprasad3983
    @thudimillasaiprasad3983 3 ปีที่แล้ว +2

    Excellent Krish I had filnally clear my self.

  • @Isaac-kq3ec
    @Isaac-kq3ec 3 ปีที่แล้ว +1

    Bro for ML+DL will you teach from basics
    Because I did my master's in geology is there any chance of getting into IT industry

  • @girishmahamuni1830
    @girishmahamuni1830 3 ปีที่แล้ว +2

    Thank you

  • @videojonkie
    @videojonkie 11 หลายเดือนก่อน

    Please check the concepts ---- I dont think definition of P Value is correct...will request the audience to cross check with other reliable sources

  • @mecidelhasan9398
    @mecidelhasan9398 11 หลายเดือนก่อน +1

    in one word ,amazing

  • @deepika2472
    @deepika2472 2 ปีที่แล้ว

    Isn't it not a fair coin when the coin tossed 60 times head? Why do we need p-value to begin with ? How many times does the coin need to be tossed 100 times for us to determine a p-value?

  • @mehmetkahyaoglu2377
    @mehmetkahyaoglu2377 2 ปีที่แล้ว

    if p > 0.05 is, then we can say that, we failed to reject that our coin is fair. Else if p < 0.05 is, hypothesis is rejected that our coin is fair. then point is that I want to make a correction. If p is equal to exact 0.05 value, means that we can not say whether it is fair or not.

  • @srinivasg6622
    @srinivasg6622 2 ปีที่แล้ว

    It would be better if you could explain us with the same keyboard example and ofcourse it's easy.

  • @dadakhalandar5820
    @dadakhalandar5820 3 ปีที่แล้ว +3

    Such a clear explanation about P-Value I have ever seen ☺ Thanks sir

  • @gauravs3605
    @gauravs3605 3 ปีที่แล้ว +1

    it is really detailed and simple to understand...Thanks Krish

  • @rifatulislamhimel6545
    @rifatulislamhimel6545 2 ปีที่แล้ว +1

    Super clear explanation. Thanks for making such a lecture.

  • @bphanikrishna1
    @bphanikrishna1 2 ปีที่แล้ว +2

    Nice explanation. When you have time please explain how to combine multiple p-values from independent tests. That is combining p-values into a single test of a common Hypothesis. Thank you in advance.

  • @preetisri7297
    @preetisri7297 3 ปีที่แล้ว +2

    Good one

  • @manikantareddy1830
    @manikantareddy1830 ปีที่แล้ว

    Sir, can you please explain this “if the CI for the mean difference contains 0 within the interval -- i.e., if the lower boundary of the CI is a negative number and the upper boundary of the CI is a positive number -- the results are not significant at the chosen significance level”
    Thank you

  • @vijayanandan3005
    @vijayanandan3005 3 ปีที่แล้ว +1

    #StatQuest :)

  • @AliRehman-c2g
    @AliRehman-c2g 7 หลายเดือนก่อน

    Thank you brother.Excellent explanation ,writing doesn’t matter

  • @biggboss5194
    @biggboss5194 3 ปีที่แล้ว +2

    Excellent explanation

  • @kajolbrahma1026
    @kajolbrahma1026 5 หลายเดือนก่อน

    Thank you so much sir . After watching this video I got clear about " P value " concept and really this is the best video I ever watched. You demonstrated it well sir .

  • @mohanb655
    @mohanb655 3 ปีที่แล้ว

    If P = 0.02 ( or 2%) , does that mean null hypothesis is true by 0.98 ( or 98%) ? and we have to accept null hypothesis ? Please guide / help. For example the relationship between alcohol consumption and marks scored.

  • @satadrubera
    @satadrubera 2 ปีที่แล้ว

    StatQuest and KrishNaik these two youtube channel just damn good for learning statistics.

  • @drpkgupta4469
    @drpkgupta4469 ปีที่แล้ว

    Thank u so much sir
    .very nice explanation sir .

  • @mandeepkour411
    @mandeepkour411 หลายเดือนก่อน

    Gr8 explanation🎉🎉🎉

  • @abhaygupta7931
    @abhaygupta7931 2 ปีที่แล้ว

    How you have plotted the categorical data (head or tail) on a pdf

  • @Simran_Warraich_
    @Simran_Warraich_ ปีที่แล้ว

    awesome explanation

  • @baljitsingh-ch9jo
    @baljitsingh-ch9jo ปีที่แล้ว

    thanx.....in simple way u explained everything

  • @earlnoli
    @earlnoli 2 ปีที่แล้ว

    my god I have heard the pvalue explanation a lot but yours is the best. I keep on forgetting it because i truly did not understood it and only memorized (then forget the definition).
    Your ada boost explanation made me subscribe few days back... you are
    just too good man. Where were you when I took my masters?? 😂

  • @Mee12394
    @Mee12394 9 หลายเดือนก่อน

    Finally understood p value 2 months before neetpg

  • @Amansingh-tr1cf
    @Amansingh-tr1cf 3 ปีที่แล้ว +1

    Awesome

  • @Dr._NextDoor
    @Dr._NextDoor 9 หลายเดือนก่อน

    Thank Youuuu! 🥲💙

  • @abdoulazizdabo9064
    @abdoulazizdabo9064 2 ปีที่แล้ว

    Best explanation

  • @nikitasinha8181
    @nikitasinha8181 ปีที่แล้ว

    Thank you sir

  • @auslei
    @auslei 2 ปีที่แล้ว

    applaud, for someone write so well with mouse, besides the good content.

  • @shakibaamirshahi8721
    @shakibaamirshahi8721 5 หลายเดือนก่อน

    The best explanation that I have ever seen for the P-value. Thanks for your useful video!

  • @chillvibes1896
    @chillvibes1896 ปีที่แล้ว

    Well explained

  • @KhalidFarooq786
    @KhalidFarooq786 2 ปีที่แล้ว

    super presentation . full marks . excellent

  • @sandhyaranisahoo933
    @sandhyaranisahoo933 ปีที่แล้ว

    Nice video Sir

  • @kiran082
    @kiran082 2 ปีที่แล้ว

    Such an awsome video with very good examples.Thanks a lot for all your efforts for creating such an amazing video

  • @benardkiplimo3508
    @benardkiplimo3508 9 หลายเดือนก่อน

    Thank you!

  • @mehboobsultana826
    @mehboobsultana826 2 ปีที่แล้ว

    if p value is only 0 what this mean?

  • @deekshashetty4611
    @deekshashetty4611 ปีที่แล้ว

    Thank you for the good explanation

  • @mahajanravish
    @mahajanravish 3 ปีที่แล้ว

    Do all data sets follows bell shape curved? If not how we will use t test and all that?
    By the way, very nice videos.😊

  • @somjitdas6034
    @somjitdas6034 3 ปีที่แล้ว +2

    Finally, the concept of p-value, null hypothesis are cleared. Thanks, Krish, your videos on DS and ML seem so fulfilling and refreshing , compared to the tedious DS+ML courses. Thanks a million, you are an amazing teacher!

  • @debjit08
    @debjit08 3 ปีที่แล้ว

    so if p value is

  • @hellomacha4388
    @hellomacha4388 3 ปีที่แล้ว

    Hello sir can you please explain weak law of large numbers and strong law of large numbers

  • @gouthamkarakavalasa4267
    @gouthamkarakavalasa4267 2 ปีที่แล้ว

    The topic explanation is not clear.

  • @sanjaisrao484
    @sanjaisrao484 2 ปีที่แล้ว

    Thanks

  • @dharmaaryayoga
    @dharmaaryayoga 3 หลายเดือนก่อน

    Thank you

  • @arpanapathak6978
    @arpanapathak6978 ปีที่แล้ว

    Thanks for this video. Fairly easy to understand and very relevant analogy.

  • @Burak-cr6um
    @Burak-cr6um 2 ปีที่แล้ว

    Thank you! it was very helpful.

  • @swapnilsarangkar6888
    @swapnilsarangkar6888 2 ปีที่แล้ว

    hi sir can you please make video on meta-analysis ?

  • @peer3142
    @peer3142 7 หลายเดือนก่อน

    Best 😍

  • @bryanstark324
    @bryanstark324 2 ปีที่แล้ว

    Thanks Krish, I signed up for your analytics course and looking forward to it!

  • @aamirwazir2362
    @aamirwazir2362 2 ปีที่แล้ว

    Thanks Sir🙋🏻‍♂️👍🏻

  • @medsisrinivas9468
    @medsisrinivas9468 3 ปีที่แล้ว +1

    Hey Krish, could you please explain how to interpret Logistic regression coefficients in the budiness terms. Linear regression coefficients is pretty clear to interpret but logistic regression log odds has bit hardtime to understand. It would be really helpful if you explain this.

  • @IngridWright-f2f
    @IngridWright-f2f 11 หลายเดือนก่อน

    The absolute best explanation I have ever heard!!

  • @prasadcaher
    @prasadcaher 3 ปีที่แล้ว +2

    👍

  • @subhranshusahani547
    @subhranshusahani547 2 ปีที่แล้ว

    Great Video...Very Clear Sir. Thank You

  • @charmaine7301
    @charmaine7301 2 ปีที่แล้ว

    Awesome explanation…you got a subscriber sir🤙

  • @tirupatimangalpelli5345
    @tirupatimangalpelli5345 8 หลายเดือนก่อน

    u really explained in simple way

  • @priyakashyap5716
    @priyakashyap5716 2 ปีที่แล้ว

    Best ever explanatory video I've seen

  • @dstan16224
    @dstan16224 ปีที่แล้ว

    Thank you very much for this explanation! The graphical representation made it finally easy to understand it.

  • @karthickk6587
    @karthickk6587 3 ปีที่แล้ว

    Thanks for making me understood the p value

  • @sangeethachandru7903
    @sangeethachandru7903 3 ปีที่แล้ว

    Excellent teaching sir. I really understood.,.