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    is there a jan 2016 ial for s1?
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    Where can I find challenging S1 questions? I did all the past papers for C1 but still managed to do terrible in this years paper...
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    (Original post by Emilypickett)
    Where can I find challenging S1 questions? I did all the past papers for C1 but still managed to do terrible in this years paper...
    do all the solomon papers, i did that last year when I sat S1 and got 91 ums
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    Does anyone have an easy way of remembering the formulas or any steps for each topic of how do it?
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    (Original post by txmz.00)
    Does anyone have an easy way of remembering the formulas or any steps for each topic of how do it?
    half the exam is just using the formula sheet. It seems to me you can get awat with knowing virtually nothing about correlation and regression except how to use the formulae
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    What topics are people finding most difficult?

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    (Original post by T17MA)
    What topics are people finding most difficult?

    Posted from TSR Mobile
    Normal distribution! I'm getting better with practice though. What about you?
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    (Original post by Emilypickett)
    Normal distribution! I'm getting better with practice though. What about you?
    I find normal distribution and probability difficult. Hopefully the practice will help.

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    does anybody know if we have to remember the steps and advantages/disadvantages to a Mathematical Model. In the textbook it said it's not required however it came up in a past paper i just did (January 2007-i think), so should I learn it or leave it?
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    (Original post by JT423)
    does anybody know if we have to remember the steps and advantages/disadvantages to a Mathematical Model. In the textbook it said it's not required however it came up in a past paper i just did (January 2007-i think), so should I learn it or leave it?
    there often seems to be a couple of marks on the paper to test your understanding of one of the topics so you never know
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    Help please
    I don't seem to understand why the answer is 25 when they want 75%
    Name:  ImageUploadedByStudent Room1464778909.548557.jpg
Views: 375
Size:  84.3 KB
    I thought it would be something like this:
    Name:  ImageUploadedByStudent Room1464778974.484192.jpg
Views: 319
Size:  12.9 KB


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    Does anybody know if I can just write down the answer for normal distribution questions (using my calculator) and get full marks for the question? for the questions like find P(Z>-0.5) etc, my calculator can give a value for it instantly (and so does like every calculator...)
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    (Original post by Bloom77)
    Help please
    I don't seem to understand why the answer is 25 when they want 75%
    Name:  ImageUploadedByStudent Room1464778909.548557.jpg
Views: 375
Size:  84.3 KB
    I thought it would be something like this:
    Name:  ImageUploadedByStudent Room1464778974.484192.jpg
Views: 319
Size:  12.9 KB


    Posted from TSR Mobile
    It's exceeded by 75%, so its asking for a score that 75% of people get above, so it's also the score that 25% get less than, and the lower quartile is 25 so that's the answer
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    (Original post by metrize)
    It's exceeded by 75%, so its asking for a score that 75% of people get above, so it's also the score that 25% get less than, and the lower quartile is 25 so that's the answer
    But 38 people are also exceeded by 75% people


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    (Original post by Bloom77)
    But 38 people are also exceeded by 75% people


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    38 is the upper quartile so thats the upper 25%
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    What is everyone doing as revision for S1?

    (Original post by Emilypickett)
    Where can I find challenging S1 questions? I did all the past papers for C1 but still managed to do terrible in this years paper...
    I did all the past papers for C1 as well and I felt like that didn't prepare me enough for the actual exam, it was nothing like the past papers!!
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    (Original post by Bloom77)
    Help please
    I don't seem to understand why the answer is 25 when they want 75%
    Name:  ImageUploadedByStudent Room1464778909.548557.jpg
Views: 375
Size:  84.3 KB
    I thought it would be something like this:
    Name:  ImageUploadedByStudent Room1464778974.484192.jpg
Views: 319
Size:  12.9 KB


    Posted from TSR Mobile
    Its asking for the mark that is gained by 75% of female students. The answer is 25 because upto 25 marks is 25% after 25 marks is 75%.

    Posted from TSR Mobile
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    Very Important Poster
    (Original post by Dominator1)
    Where can I get the mark scheme?
    You don't. Sounds like rubbish to me.
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    Does anyone have an easy way of working out the different probabilities i am having difficulty understanding probability cannot get my head around it.
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    (Original post by txmz.00)
    Does anyone have an easy way of working out the different probabilities i am having difficulty understanding probability cannot get my head around it.
    You might find this helpful
    https://www.youtube.com/watch?v=ovc0NR_JwKU
 
 
 
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