Introduction to sampling distributions | Sampling distributions | AP Statistics | Khan Academy

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  • Опубліковано 24 гру 2024

КОМЕНТАРІ • 121

  • @mojojove
    @mojojove 4 роки тому +578

    I feel like 10 minutes of KhanAcademy is worth more than 2 hours of lecture

  • @Zila9879
    @Zila9879 6 років тому +100

    It's so clear! My professor takes days to describe it, using tons of definitions. This video is so good!

  • @eclecticreader961
    @eclecticreader961 6 років тому +91

    I learned this from my professor in the last few days and the concept made little sense to me, because he didn't fully elaborate as you do. Thank you for the stupendous clarity.

    • @manikantaperumalla8014
      @manikantaperumalla8014 5 років тому

      same problem even me

    • @iowaasharukh3349
      @iowaasharukh3349 5 років тому +6

      it's just because you didn't feel a need of listening during that time. Now that a test is coming up, you're focusing.

  • @niharikakhullar7675
    @niharikakhullar7675 3 роки тому +241

    These Concepts work fine until you get University questions and nothing makes sense anymore.

    • @rakeshchandra9638
      @rakeshchandra9638 Рік тому +4

      Yes...in Indian situation. For us mathematics means put the value get the answer(pudi-getdi)😂!

    • @shiz1899
      @shiz1899 Рік тому +2

      Same 🤦🏻‍♀️

    • @PatMiano
      @PatMiano Рік тому +2

      My thoughts exactly!

    • @madisvlogs3992
      @madisvlogs3992 Рік тому +2

      @@GodLovesYou531This is Khan Academy, not Con Academy

    • @daremo5129
      @daremo5129 Рік тому +1

      relatable lol

  • @melanynicole2118
    @melanynicole2118 3 роки тому +3

    have a statistics exam tomorrow and this channel is the only reason why i now have a chance in passing it

  • @leoa6589
    @leoa6589 3 роки тому +9

    We're so lucky to have a resource like this

  • @sathiswaranpalanisamy4471
    @sathiswaranpalanisamy4471 5 місяців тому +1

    Oh My God! I was struggling to get sample distribution for more than hours of explanations from different many videos. This video just a length of 7 minute
    explains very precisely in a simple manner without any bombarding things. Just cant believe in 7 minutes, it's possible to explain sampling distribution

  • @hasansakib3502
    @hasansakib3502 2 роки тому +11

    GREAT TEACHER,,, BETTER THAN SO-CALLED 3-6 HOURS OF CLASS LECTURES

  • @nyreebanner3276
    @nyreebanner3276 5 років тому +9

    Thank God for Khan Academy! I would have been lost without this!

  • @Cornelia80sbaby
    @Cornelia80sbaby 4 роки тому +6

    Absolutely the best instructor when it comes to learning a new subject. Thank you for all you do.

  • @2highbruh
    @2highbruh 3 роки тому +2

    The handwriting is so goood... neat and sharp, love it!

  • @Mo_Gem_bo
    @Mo_Gem_bo 4 роки тому +1

    Wow! My teacher took whole day to describe this....but this 7 min videooo is amazing

  • @kingspray1987
    @kingspray1987 6 років тому +9

    thax for the explanation because i left 1 hr before exam and this is how legends are born.

  • @Etriant
    @Etriant 2 роки тому +1

    Real G's out here explaining AP Stats like my teacher never could

  • @andrewchen861
    @andrewchen861 Рік тому

    This is so helpful! Sal is actually too pro at teaching

  • @hazelvigoyt1567
    @hazelvigoyt1567 3 роки тому +1

    Now I know how to determine the frequency. Thanks

  • @chucdy2869
    @chucdy2869 3 роки тому +2

    You have saved my future presentation of this chapter

  • @manafal-balushi3298
    @manafal-balushi3298 2 роки тому +1

    كفيت ووفيت جزاك الله خير

  • @aradais1087
    @aradais1087 4 роки тому

    OMG, he makes it look so easy!!!

  • @TaylorQuince19493
    @TaylorQuince19493 2 роки тому +2

    Why do we use replacement?

  • @vigneshbalasubramanian7878
    @vigneshbalasubramanian7878 3 роки тому +2

    Why are we replacing the ball and taking? As in, in our population for the balls, we don't have 2 balls having the value 1 right? What is the need for replacement?

  • @earlenriquez4525
    @earlenriquez4525 6 років тому +1

    Wow thank you. You saved my assignment.

  • @williamvalentinmunozlopez9858
    @williamvalentinmunozlopez9858 4 роки тому

    after all these years, I get this

  • @rishabhnarula1999
    @rishabhnarula1999 Рік тому

    thank you sir, really great explanation.

  • @joshuar1ley
    @joshuar1ley 5 років тому +2

    If you hate the black screen, invert the colors to make it white

  • @juvelynlindong7812
    @juvelynlindong7812 3 роки тому

    Thank you. I leaned a lot. Reviewing for my doctorate degree comprehensive examination.

  • @thesecretjin5988
    @thesecretjin5988 3 роки тому +3

    if there is only one ball of each number. how can you pick two 3s or two 2s or two 1s. we are picking two balls in one event

    • @marywambui7279
      @marywambui7279 3 роки тому

      In each sample two balls are picked but each individually...after the first pick the ball is replaced creating a probability of the same pick when taking the next ball

    • @AmBasLam
      @AmBasLam 3 роки тому

      @@marywambui7279 this means that the population size is not 3, the population will have infinite number of balls but each ball is numbered either 1,2 or 3

    • @vicadegboye684
      @vicadegboye684 2 роки тому

      @@AmBasLam It's really confusing. I think you are right, because it doesn't make sense to pick two balls of the same number if only one ball of each number exists

  • @bluesky-mi2sx
    @bluesky-mi2sx 4 роки тому +1

    If this what sampling distribution is
    Isn't the same as the central limit theorem?
    I can't find a difference between them

  • @Aurelius-VDB
    @Aurelius-VDB Рік тому

    THanx heaps ! this makes it looks so much easier ❣ I think lecturers are trying to make things hard to value their qualifications 😹

  • @margaritalanciso2738
    @margaritalanciso2738 3 роки тому

    it's a very comprehensive presentation.

  • @hanwang1218
    @hanwang1218 4 роки тому

    10 min khan academy (true learning and practise) > 2 hours lecture (messy notes and mental stress). Wonder when university can stop paying some profs and donate more to khan academy...

  • @dunethchadeera5838
    @dunethchadeera5838 Рік тому

    thanks

  • @abdulmalekalsaati4856
    @abdulmalekalsaati4856 3 роки тому

    simple and fruitful

  • @ahmedabduraman9214
    @ahmedabduraman9214 2 роки тому

    💗 IM feeling very happy 💯 for injibara university for that thing I sawed that on online

  • @AJ-et3vf
    @AJ-et3vf 2 роки тому

    awesome video! thank you!

  • @kahoncheung7046
    @kahoncheung7046 4 роки тому +4

    I would like to ask whether sampling distribution is always a normal distribution? Why🙈

  • @suryanarayanan5158
    @suryanarayanan5158 4 роки тому

    Very clear explanation!

  • @daashakms
    @daashakms 5 років тому +10

    How did you get those results written in the x-bars?

    • @zeyaddessouki890
      @zeyaddessouki890 5 років тому +4

      X-bar is the mean=(first value + second value)/num of value..... for example the first xbar =(1+1)/2 =1

  • @h92471772
    @h92471772 6 років тому +2

    this is amazing!! helped me a lot!! thank you!!

  • @sitinoraisyahbintiazmi1729
    @sitinoraisyahbintiazmi1729 4 роки тому

    Thank you for the explanation!

  • @chadholdaway2089
    @chadholdaway2089 4 роки тому +1

    You should invest in an audio interface and a Shure SM7B microphone.

  • @GUERO6969
    @GUERO6969 Рік тому

    Where did you get 1.5, 2.5, all the numbers on the right side

  • @shadreckbanda4031
    @shadreckbanda4031 Місяць тому

    How was he gerring the 1.5?

  • @x3candybabyx3
    @x3candybabyx3 5 років тому

    This video was so helpful!

  • @23julio
    @23julio 3 роки тому

    Got it, omg it's so simple after watching your explanation

  • @11-berkeleyroyyuriahkelly89
    @11-berkeleyroyyuriahkelly89 2 роки тому

    where did you get the sample mean

  • @DammikaHerath
    @DammikaHerath 3 роки тому

    How do u pick 1and 1, 2 and 2 if the population contain only 1,2,3?

  • @nutansingh2051
    @nutansingh2051 6 років тому

    Nice explanation 👌👌👌

  • @selenamareyvermillion1798
    @selenamareyvermillion1798 5 років тому

    what happens when the sample distribution of x̅ when the population is normal?what happens when the sample distribution of x̅ when the sample size is large?

  • @gabrielcg1062
    @gabrielcg1062 7 років тому +1

    Very nice vid!!! Same with all your videos!!!😊

  • @oreoshake5951
    @oreoshake5951 3 роки тому

    Graph looks very familiar to normal distribution

  • @appaknak7534
    @appaknak7534 3 роки тому

    hi, in 10 random samples, one frequency is equal to 0.1 probability. what is the probability of one frequency if there are 21 random samples??? need help please

    • @appaknak7534
      @appaknak7534 3 роки тому

      I mean I'm aware its 21/1, what is its decimal?

  • @angelobermudez3492
    @angelobermudez3492 4 роки тому

    What if the sample size is 3?

  • @francesnicole8585
    @francesnicole8585 4 роки тому

    How about if the 7C5?

  • @JS-cv4vb
    @JS-cv4vb 5 років тому +1

    how was it 1.5

  • @christinejoy8469
    @christinejoy8469 4 роки тому

    Anybody help me, how can we compute the Sampling distribution of the mean?

  • @the_sourman
    @the_sourman Рік тому

    i snickered everytime he said balls

  • @aditigarima3946
    @aditigarima3946 4 роки тому

    Very good

  • @nglgalaxy98
    @nglgalaxy98 5 років тому

    is it with replacement or without replacement?

  • @ummmmee9957
    @ummmmee9957 Рік тому

    Thank you

  • @phucyouse5316
    @phucyouse5316 2 роки тому

    I'd rather be practicing piano and guitar(7) followed by intense research intervals on my Mac waiting for my lushstache to come home ;)

  • @nothing8752
    @nothing8752 4 роки тому

    Thanks a lot

  • @mazharahmed9058
    @mazharahmed9058 4 роки тому

    Is there any one ,who know about the wrong reseach paper of sampling distribution of the sample mean

  • @whengamingyournotalone5740
    @whengamingyournotalone5740 3 роки тому

    Me: a lazy in math "did he just add and divide that thing like 0.5 secs"

  • @shubhangibansal5373
    @shubhangibansal5373 5 років тому

    where is the rest of it

  • @kizitodavinci3152
    @kizitodavinci3152 2 роки тому

    you have repeated outcomes , total possible combinations should be 6, No ?

  • @ivault3
    @ivault3 5 років тому

    thank you so much for this!!!

  • @shinnnnishin
    @shinnnnishin 2 роки тому

    I think 3÷3 shouldn't be equal 3, it should be 1. So therefore there is no 3 in the chart.
    right?

    • @LDHulll
      @LDHulll 2 роки тому

      He is taking the average or mean. So it is 3+3=6. Then he divides it by 2 since he used 2 numerals for the average. 6/2 which equals 3.

  • @AliHamza-yc4ul
    @AliHamza-yc4ul 6 років тому +1

    It's really helpful thank you so much

  • @leonardogenghini9073
    @leonardogenghini9073 5 років тому

    What program do you use to make these video’s?

    • @leonbuena5312
      @leonbuena5312 5 років тому

      I think he use SmoothDraw as the drawing software

  • @sketch1625
    @sketch1625 6 років тому

    He used relative frequency instead of regular frequency for those OCD ones.

    • @sketch1625
      @sketch1625 6 років тому

      ting machineintellect it’s correct. It’s just called relative frequency in the y axis when it’s all over 9. Simpler version would have been 1, 2, 3, etc.. which is just frequency.

  • @NishaSharma-se1js
    @NishaSharma-se1js 5 років тому

    No need to read any other thing after watching this video

  • @Anj9
    @Anj9 4 роки тому

    Is this sampling theory

  • @husenibragimov6113
    @husenibragimov6113 5 років тому

    gracias , super claro

  • @Evelyn-pl1hd
    @Evelyn-pl1hd 2 роки тому

    ya i still dont get it

  • @thithanhmaitran8466
    @thithanhmaitran8466 7 років тому

    I am study English by myself, Your video is very easy to understand and I like your voice, Can you introduce some same page for me? Thanks

  • @Potencyfunction
    @Potencyfunction 9 місяців тому

    You dont calcul the frequency that way ! The frequency is calculated by divinding with the sum of total hyppihed.

  • @iskate248
    @iskate248 2 роки тому

    How much time is wasted watching things be drawn, especially words

  • @mcDynamit
    @mcDynamit 2 роки тому

    İn Real world I wouldn't pick the same sample twice,, but here it is contrary,, can you please explain

  • @MiguelAngel-ep9vt
    @MiguelAngel-ep9vt 6 років тому +2

    If there's only one number 1 ball, why would you record it as ( 1, 1 ) on your list. You can't possibly have two number 1 balls because there's only one in the population.

    • @eminmammadov6525
      @eminmammadov6525 6 років тому

      Possible, if sampling is done with replacement.

    • @AmBasLam
      @AmBasLam 3 роки тому

      @@eminmammadov6525 this means that the population size is not only 3 balls

  • @BarbaraGonzalez-l4v
    @BarbaraGonzalez-l4v 2 місяці тому

    Taylor Ruth Jackson Eric Taylor Kevin

  • @rajsthancommerceclassvijay3350
    @rajsthancommerceclassvijay3350 4 роки тому

    Sir please speek in Indian english

  • @Poppa_82
    @Poppa_82 3 роки тому +1

    This is terrible...you arent teaching people how you get your answers

  • @Anne_p
    @Anne_p 6 років тому

    Sometimes you just want a definition not an explanation.

  • @ATodCoBlocks
    @ATodCoBlocks 7 років тому +1

    second

  • @mist6207
    @mist6207 7 років тому

    FIRST :D