Box and Whisker Plots - Skewness and Outliers : ExamSolutions Maths Revision

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  • Опубліковано 22 гру 2024

КОМЕНТАРІ • 37

  • @zarishafasial5824
    @zarishafasial5824 3 роки тому +5

    How are you so good at explaining things, I have my maths exam after two months and I was really worried for it and I wasn't getting anything that my teacher explained in the class, thankyou so much sir.....

  • @lovepoems8093
    @lovepoems8093 3 роки тому +2

    Hi. Please explain to me how u got 1.5 as the lower and upper outliers?

  • @simonambat
    @simonambat 10 років тому +5

    Very good video. quite useful. Thank u so much.

  • @oskarthompson5088
    @oskarthompson5088 8 років тому +52

    better at 1.5x speed

  • @TheElectrozoid
    @TheElectrozoid 7 років тому +3

    Hello ExamSolutions, first of all, thanks for the videos! I just wanted to ask; how do we find the quartiles when the number of values is even?

    • @alifiyahyounus1948
      @alifiyahyounus1948 3 роки тому +1

      By adding the both middle value of a particular quartile and then dividing it by 2

  • @RingsideReels
    @RingsideReels Рік тому

    You and your team are a god send

  • @zainulhassan3386
    @zainulhassan3386 4 роки тому +1

    Thank you so much liked and subscribed

  • @MJClarke17Twelve
    @MJClarke17Twelve 10 років тому +1

    When will there be more than one outlier on each side? And how would you calculate them?

    • @stevedl3150
      @stevedl3150 10 років тому

      There need not be more than one outlier on each side. There may be no outliers on either side, or there may be one or more than one outliers on one or both sides.
      As regards calculating them, this is explained in the video : All values that are less than Q1-1.5 (Q3-Q1) is a lower outlier, and similarly all values that are greater than Q3+1.5(Q3-Q1) is an upper outlier.
      I trust you are familiar with the order of operations and that this helps ?

  • @MegaAwsome123451
    @MegaAwsome123451 8 років тому +1

    do they give you an outlier formulae depending on the question or is that the fixed formula for all questions?

  • @darkskull1155
    @darkskull1155 9 років тому +1

    How do we find the quartiles when the number of values is even?

    • @ExamSolutions_Maths
      @ExamSolutions_Maths  9 років тому

      +Jacob Cass Have you looked at this? www.examsolutions.net/maths-revision/statistics/representing-data/discrete/Q1-Q2-Q3-IQR/tutorial-1.php

    • @darkskull1155
      @darkskull1155 9 років тому

      I didnt actually, thanks for the heads up!

  • @alexmoody3363
    @alexmoody3363 7 років тому

    Outliers will not occur when the plot is symmetrical, correct?

  • @sweetlove1754
    @sweetlove1754 3 роки тому

    *sir please make a video on assumed mean*

  • @the81kid
    @the81kid 8 років тому +1

    These are very helpful videos, much appreciated!

  • @sweetlove1754
    @sweetlove1754 3 роки тому

    sir this is perfect

  • @srikanthieweerasinghe3189
    @srikanthieweerasinghe3189 8 років тому

    For median isn't it 16 and not 15? Because 10/2 and that gave be 5th value so I add 15+17 /2 and that's 16?

    • @Mirsab
      @Mirsab 5 років тому

      You don't add 15 and 17, you just count the total number of observations, which is 11, then add 1, so 12, now divide by 2 giving 6, and check the 6th value, which is 15. So 15 is the median.

  • @irm9519
    @irm9519 8 років тому +3

    Hello maths, I'd just like to show my apprecia

    • @oskarthompson5088
      @oskarthompson5088 8 років тому +2

      better at 2x speed

    • @irm9519
      @irm9519 8 років тому

      better when you turn this fucking shit off!!!!!!!!!!!!!!!

  • @musicislife665
    @musicislife665 5 років тому

    Thanks!

  • @ibrahimhafeez3413
    @ibrahimhafeez3413 5 років тому

    Amazing thank you

  • @tarisayi1
    @tarisayi1 11 років тому

    i don't understand how you are getting this answer... 12-1.5 x 7 = 1.5????

    • @ExamSolutions_Maths
      @ExamSolutions_Maths  11 років тому +2

      It sounds like you are doing 12-1.5 which gives 10.5 and then you are multiplying it by 7. It is 1.5x7 which is 10.5 and then this is subtracted from 12. This is basic order of operations.

    • @mahmoudm451
      @mahmoudm451 9 років тому

      you have to use the DMAS rule (division first then multiplication then addition then subtraction) so you should multiply first then subtract and you will get 1.5