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Official Edexcel S3 thread Wednesday 20 May 2015 Morning [6691] Watch

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    what did everyone get for Q2 (16 staff and 14 children question )the figure for S2 (var )is it about one thousand something?
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    (Original post by Navo D.)
    1587 iirc yeah, hopefully we're both right. What'd you write for the last part of the stratified sampling question?
    Was it to explain the difference ? Because n in small standard error is high.
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    (Original post by xyzmaster)
    Was it to explain the difference ? Because n in small standard error is high.
    Yeah that one. Ah okay I wrote something similar
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    I did the last decade's worth of papers in preparation but this is the hardest paper I've seen. Doable, just.
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    (Original post by haonan)
    what did everyone get for Q2 (16 staff and 14 children question )the figure for S2 (var )is it about one thousand something?
    1026 yes
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    (Original post by xyzmaster)
    Was it to explain the difference ? Because n in small standard error is high.
    Oh yes, Im not sure about that one I just wrote the sampling didn't give the full representation of the population
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    (Original post by haonan)
    what did everyone get for Q2 (16 staff and 14 children question )the figure for S2 (var )is it about one thousand something?
    1026.3...
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    (Original post by Navo D.)
    Yeah that one. Ah okay I wrote something similar
    What was your spcc. -6?
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    (Original post by haonan)
    what did everyone get for Q2 (16 staff and 14 children question )the figure for S2 (var )is it about one thousand something?
    1026........
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    Forgive me if I'm wrong
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    (Original post by xyzmaster)
    What was your spcc. -6?
    0.6 lol
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    For the contingency table (6c?) you proved 27... by dividing by 50?
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    Wasn't 1026.3 wrong? Because I misread the question at first and it talks about WHOLE population
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    Is there a grade boundery which edexcel use to deviate from or is it solely dependent on how students do overall in the exam??
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    (Original post by Navo D.)
    0.6 lol
    Nah it was a negative correlation. Less pages - more sales or whatever it was.
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    (Original post by STATER)
    For the contingency table (6c?) you proved 27... by dividing by 50?
    Wasn't it by 100?
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    (Original post by STATER)
    Nah it was a negative correlation. Less pages - more sales or whatever it was.
    I also got 0.6. Probably depends how you do your ranks
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    (Original post by STATER)
    Nah it was a negative correlation. Less pages - more sales or whatever it was.
    Sounds like one where they'd take either.
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    (Original post by Saracen's Fez)
    Wasn't it by 100?
    For me it was coming out as half the value so not seeing what the problem was I made it 50
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    (Original post by STATER)
    For the contingency table (6c?) you proved 27... by dividing by 50?
    I think is dividing by 100...
 
 
 
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