Hey there! Sign in to join this conversationNew here? Join for free
    Offline

    1
    ReputationRep:
    Does anyone have any tips on how to know the skewness of the data? I always get them mixed up! Thanks
    Offline

    12
    ReputationRep:
    Ugh i hate this module so much. Bores me to death
    • Very Important Poster
    Online

    21
    ReputationRep:
    Very Important Poster
    (Original post by megan-garner6)
    Does anyone have any tips on how to know the skewness of the data? I always get them mixed up! Thanks
    Just remember, left = positive, right = negative :rofl:

    If you look at page 68 of the textbook, you will see why.

    For the graphs, the positive skew is the one with most of the data on the left.

    For the inequalitie with mode, median and mean, if all of the arrows are pointing to the left (mode<median<mean) then it is positive.

    On the box plot, if the median is closer to Q1 than Q3 (i.e to the left) then it is positive.

    Then the last one.. :dontknow: positive number means positive skew, I guess.
    Offline

    1
    ReputationRep:
    (Original post by SeanFM)
    Just remember, left = positive, right = negative :rofl:

    If you look at page 68 of the textbook, you will see why.

    For the graphs, the positive skew is the one with most of the data on the left.

    For the inequalitie with mode, median and mean, if all of the arrows are pointing to the left (mode<median<mean) then it is positive.

    On the box plot, if the median is closer to Q1 than Q3 (i.e to the left) then it is positive.

    Then the last one.. :dontknow: positive number means positive skew, I guess.
    Ah okay thank you very much!!
    Offline

    18
    ReputationRep:
    (Original post by imran_)
    been doing past papes and getting low A's. I hate this module im resitting this also, just need a B/c to overall an A for AS maths
    Good luck!!
    Offline

    10
    ReputationRep:
    Do u think 5 papers is enough to do well in this module?
    Offline

    20
    ReputationRep:
    (Original post by ryandaniels2015)
    Do u think 5 papers is enough to do well in this module?
    Lol unless ur really confident
    I think you should do as many possible


    Posted from TSR Mobile
    • Very Important Poster
    Online

    21
    ReputationRep:
    Very Important Poster
    (Original post by ryandaniels2015)
    Do u think 5 papers is enough to do well in this module?
    Do 1-2 and find out. If you ace them then 5 is probably enough. But the more, the betetr. Maybe some solomon chucked in too.
    Offline

    4
    ReputationRep:
    havent revised for a solid week and never done s1
    think ill get an A?


    Posted from TSR Mobile
    Offline

    0
    ReputationRep:
    (Original post by TS21)
    havent revised for a solid week and never done s1
    think ill get an A?


    Posted from TSR Mobile
    You still can if you revise the entire book in 3-5 days and then start doing past papers and mainly questions by topic.
    Keep practising the papers and with hard work you can get an A.
    • Community Assistant
    Offline

    18
    ReputationRep:
    Community Assistant
    (Original post by Bloom77)
    Yep and about Q44, I've seen the sign for it, I don't think your supposed to know it tho


    Posted from TSR Mobile
    care to explain qn 48?
    Offline

    2
    ReputationRep:
    (Original post by tazza ma razza)
    care to explain qn 48?
    can you post the question
    • Community Assistant
    Offline

    18
    ReputationRep:
    Community Assistant
    (Original post by candol)
    can you post the question
    oh yh that'd be useful lol gimme a sec and check this post once i have added the spoiler thing

    EDIT:

    Spoiler:
    Show
    http://madasmaths.com/archive/maths_...robability.pdf qn 48 of the venn diagram bit. also qn 44 of the venn diagram qns
    Offline

    2
    ReputationRep:
    I haven't started revising for S1 yet cause I've had sciences, I have 5 days. Do you think that'll be enough to cover all S1 and hopefully achieve an A?
    • Very Important Poster
    Online

    21
    ReputationRep:
    Very Important Poster
    (Original post by sgill23)
    I haven't started revising for S1 yet cause I've had sciences, I have 5 days. Do you think that'll be enough to cover all S1 and hopefully achieve an A?
    Yes, as long as you do those days wisely.

    Work through the textbook for the first 2/3 days, practice loads of questions. Move on to past papers the next day, plus solomon papers to fill up your time.
    Offline

    2
    ReputationRep:
    (Original post by tazza ma razza)
    oh yh that'd be useful lol gimme a sec and check this post once i have added the spoiler thing

    EDIT:
    Spoiler:
    Show
    http://madasmaths.com/archive/maths_...robability.pdf qn 48 of the venn diagram bit. also qn 44 of the venn diagram qns
    am struggling with the format for intersection,
    will have to send tonight
    Offline

    2
    ReputationRep:
    will I be better of by just doing edexcel papers rather than solomon and madasmaths papers?
    Offline

    2
    ReputationRep:
    (Original post by imran_)
    will I be better of by just doing edexcel papers rather than solomon and madasmaths papers?
    I'd do the practice papers and then one or two Solomon papers in the run up to the exam next week. Do the IAL papers as well.
    Offline

    0
    ReputationRep:
    That symbol just means subset. So if A is a subset of B, all of the elements in A are in B too. So A can be identical to B, or A has less elements than B, but all elements in A must be present in B. This can be shown in the venn diagram by drawing A inside of B.

    I don't think you need to know this, but this was in IGCSE.
    Offline

    2
    ReputationRep:
    (Original post by tazza ma razza)
    care to explain qn 48?
    see attached
    Attached Files
  1. File Type: docx Here goes.docx (13.1 KB, 107 views)
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    What's your favourite Christmas sweets?
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.