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S1 May 2012 - Post Exam Thread - Paper and Solutions in the FIRST POST

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    S1 May 2012

    Not sure what to make of this paper, certainly required a little more thought than normal

    Q1 - DRV

    Easy


    Q2 - PMCC

    Easy


    Q3 - Linear regression

    Bit weird but pretty easy


    Q4 - Venn

    So stupidly easy


    Q5 - Measures of location / spread

    Very weird - you could have quite easily solved it by spotting that there were 22.5 5x5 squares so each 5x5 square represented 20 cars.

    However I think this will be a massive bloodbath with many students picking up no marks.


    Q6 - Normal distribution

    Harder than normal I would say; I used the % points table to answer b) and c)


    Q7 - Probability

    Fairly easy but pretty unusual


    I am going for

    75 - 100ums
    68 - 90ums
    61 - 80ums
    53 - 70ums
    45 - 60ums
    37 - 50ums
    29 - 40ums



    This thread will be locked at somepoint and then unlocked at midnight following the Stats 1 examination.

    I will upload the paper and my solutions to this post.

    I will do my best to answer questions about the paper but please try to read the thread first so that I am not answering the same questions lots of times.

    Here are some links to previous S1 threads, they are worth a read and you will see what the common errors were...

    S1 Jan 2012 - http://www.thestudentroom.co.uk/show....php?t=1865940

    S1 June 2011 - http://www.thestudentroom.co.uk/show....php?t=1619124

    The second link contains loads of past papers, model answers etc

    Good luck.
    Attached Images
  1. File Type: pdf 12 May S1 RA.pdf (807.8 KB, 21124 views)
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    First?

    This exam was lovely
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    I struggled on the histogram question so bad.
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    :/ ... Fingers crossed!
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    Unofficial mark scheme!
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    Good exam other than the histogram question which annoyed me >_<
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    (Original post by yayifications)
    I struggled on the histogram question so bad.
    I revised them all last night, funny feeling there was gonna be a horrible histogram question, as soon as I saw it I'm pretty sure I made a very loud noise in excitement...
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    The probability question was really difficult.
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    I thought the exam was nice! desperate to check my answers!
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    Everything easy apart from the histogram. Lost 9 marks from that
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    Histogram Q was good! The normal distribution part (c) was a muck-up of a Q... :/
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    (Original post by JakeMachinima)
    I revised them all last night, funny feeling there was gonna be a horrible histogram question, as soon as I saw it I'm pretty sure I made a very loud noise in excitement...
    I knew I couldn't do them, I just hoped they wouldn't come up... obviously not a good tactic LOL.
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    I was stupid enough to draw my tree diagram in pencil, do you think I'll lose marks for it? Other than that it was a decent paper.
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    did histogram in last 2 mins made so many stupid slips in the paper
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    mark scheme! dying to see the histogram question!
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    Anyone else totally mucked up the histogram one? I left the first 3 parts blank, fml
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    Solutions now in the first post
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    (Original post by UWS)
    Everything easy apart from the histogram. Lost 9 marks from that
    It seems that was the only question that got people - and it got people good! Everything else was good though, yeah.
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    Some of the probability questions were really tricky!
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    Easiest paper I've done in my life apart from maybe Unit 2 Chemistry GCSE , only thing i got wrong i think was drawing the regression line on the graph and the skew of the data i got mixed up. :/

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