How to find the 1st, 2nd and 3rd quartiles of a discrete set of data. (Connor McDonald)

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  • čas přidán 22. 08. 2024
  • St. Peter's College Maths portfolio task 3- Connor McDonald. I made this this with final cut pro and a home made green screen

Komentáře • 59

  • @SawMeLike
    @SawMeLike Před 7 lety +56

    You honestly explained it better than the University prof I have this year.

    • @FunMelonBoi
      @FunMelonBoi Před rokem +1

      this guy my be in college 😮😮

    • @salmankazmi5299
      @salmankazmi5299 Před 9 měsíci

      You bet, he explains better than a lot ones!

  • @faisalbinfaruk3278
    @faisalbinfaruk3278 Před 6 lety +41

    If the number of data is even then this rule does not apply. In that case for finding the 2nd quartile is to arrange them in ascending order and then the median (middle number for odd number of data, average of the middle numbers for even numbers of data) is the 2nd quartile. Divide the ordered data in two groups, and then median of the 1st group is 1st quartile, median of the 2nd group is 3rd quartile.
    Example 1 : Ordered data 2,2,3,4,5,5,6,7,7,8,9,9 .
    total number is 12 (even).
    median of this data set is (5+6)/2 = 5.5 which is the 2nd quartile.
    Dividing the data into 2 groups we get 1st group 2,2,3,4,5,5. Median is (3+4)/2 = 3.5 which is the 1st quartile and
    2nd group 6,7,7,8,9,9 . Median is (7+8)/2 = 7.5 which is the 3rd quartile.
    Example 2: Ordered data 2,2,3,4,5,5,6,7,7,8,9,9,11,15 .......... 2nd quartile = (6+7)/2 = 6.5
    1st group 2,2,3,4,5,5,6............Median or 1st quartile = 4
    2nd group 7,7,8,9,9,11,15...........Median or 3rd quartile = 9

  • @Taking_1st
    @Taking_1st Před 3 měsíci +1

    You taught me this topic in one minute. My teacher spent an entire class and made me even more confused. Thank you!

  • @ghostly42
    @ghostly42 Před 7 lety +18

    Straight and to the point. Thanks man.

  • @pointlesslypointlessproduc7323

    Dude, this literally is the _only_ CZcams video you have made. You realize that you are great at math and can make more. You should, it would really benifit to other people out there who need help in math.

  • @maraya2374
    @maraya2374 Před 5 lety +1

    yall can set the playback speed to 0.75 for a much understandable speed. Great explanation, thank you!!

  • @brie534
    @brie534 Před rokem +2

    Yeah i don't know about anyone else but this literally did not work at all for me.

  • @westbrooke1174
    @westbrooke1174 Před 4 lety +1

    Make more of these! I learnt more in 1 minute, then I did in an hour-long class.

  • @neriusshaqiri1514
    @neriusshaqiri1514 Před rokem

    Explained so perfectly in under a minute. Thanks

  • @theblackfinjasquest

    Fastest lesson of my entire life 💀

  • @MsDavis-xl6re
    @MsDavis-xl6re Před 5 lety +2

    What the heck!!!!! not even about to watch it again

  • @Rosess7211
    @Rosess7211 Před 5 lety +4

    People take this at university and I'm taking this at school... there's a simpler formula I think but I forgot it so imma open the textbook again.

  • @Andrea-qx9vg
    @Andrea-qx9vg Před 5 lety +2

    THANK YOU SO MUCH CONNOR !!!!!
    I LOVE YOU !!!!

  • @shoelace9932
    @shoelace9932 Před rokem

    Thanks for the quick and straight to the point explanation.

  • @HTrntrs
    @HTrntrs Před 5 lety +1

    Man now eminem’s gonna diss you

  • @newaccountBviewssecondsa-nh6sb

    Huh... How do we get 1/4,1/2,3/4 and how do you get the answer 3,5, and 7....

  • @Leviesyoutubechannel
    @Leviesyoutubechannel Před 6 lety +2

    I’m @ middle school and we use waaaaaayy bigger numbers, and it’s a bit hard to understand this whole thing since you use small numbers.

  • @Mizfit_
    @Mizfit_ Před rokem +2

    This works if it's an odd set of group data, What about an even set ?

  • @user-rm1ux2ru6s
    @user-rm1ux2ru6s Před 10 měsíci

    gotta give u props man...

  • @lizzraniel6756
    @lizzraniel6756 Před 2 lety +1

    What happens if the quartile of n have decimals

  • @mshabb23
    @mshabb23 Před 5 lety +2

    I do not get it at all

  • @pointlesslypointlessproduc7323

    THAAAAAAAANK YOUUUUUUUU! SOOOOOOO MUUUUUUUUCH!

  • @juliannarabinovitch6112
    @juliannarabinovitch6112 Před 6 lety +2

    what is the reason for adding 1 to the total number of observations in the formula?

  • @jt_douglas
    @jt_douglas Před 7 lety +4

    Maybe a little bit slower maybe? It was kind of hard to understand.

  • @mumapeeto
    @mumapeeto Před 3 lety

    I really appreciate you thanks much you made it so easy to understand

  • @maiduong4507
    @maiduong4507 Před 5 lety +1

    Umm.....this is STILL confusing

  • @f115ortega
    @f115ortega Před 6 lety +1

    love it, just pay attention to the writing .

  • @alec2240
    @alec2240 Před 2 lety

    You earnt my sub

  • @beverlykim4424
    @beverlykim4424 Před 5 lety

    this is so fast but I learned how to get the first, second, third quartile easier and faster than my math teacher😂

  • @boxinglatest9665
    @boxinglatest9665 Před 3 lety

    Thank soo much ,ahhh you really explain it bette

  • @omarsh5269
    @omarsh5269 Před 7 lety +2

    great Thanks

  • @sergiodominguez1584
    @sergiodominguez1584 Před 6 měsíci

    Where he get 11?

  • @Chiquiess
    @Chiquiess Před 7 lety +5

    you are too fast

  • @abdalrahmanelkady315
    @abdalrahmanelkady315 Před 2 lety

    thank you

  • @andrewhowell24
    @andrewhowell24 Před 7 lety +14

    talking wayyyyy to fast

  • @galliumboron5417
    @galliumboron5417 Před 3 lety

    Thank you

  • @kawaiinuggett3595
    @kawaiinuggett3595 Před 3 měsíci

    Whaaatt

  • @motivationforhustlers2686

    Wtf I am 15 years old ... and our Math teacher 👨‍🏫 learns statistics with us...

  • @nenigym8325
    @nenigym8325 Před 7 lety

    At first I did not understand and then I sow this video and it still did not halp me but then I ask my teacher and she helped me understand ot I did not understand a word he said!!!!

  • @christiankabeya9606
    @christiankabeya9606 Před 6 lety +1

    Where u got 11 from

    • @faisalbinfaruk3278
      @faisalbinfaruk3278 Před 6 lety

      11 is the total number of data in this question, which is represented by n

  • @OS4M4oso
    @OS4M4oso Před 5 lety

    i love you.

  • @Josher_C.
    @Josher_C. Před 4 měsíci

    That was too ez

  • @yuozff6357
    @yuozff6357 Před 5 měsíci

    Conor mcgregor

  • @lizzraniel6756
    @lizzraniel6756 Před 2 lety

    What happens if the 1/4 of the n is with decimals

  • @iamaks24
    @iamaks24 Před 6 lety

    Thanku man

  • @kermit8292
    @kermit8292 Před 4 lety

    One vid

  • @dog-boyanimations6257
    @dog-boyanimations6257 Před 4 lety

    You said it way to fast, dislike