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Thread: Good luck to all A level students!

  1. #41
    Senior Member +evenstar's Avatar
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    Default Re: Good luck to all A level students!

    Quote Originally Posted by Sjourn View Post
    15 to 20 years ago only what..
    20yrs ago we're not born yet...
    eat. drink. shoot

  2. #42
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    Default Re: good luck to all A level students!

    Quote Originally Posted by Del_CtrlnoAlt View Post
    hehehe...
    Where did u dig that up?
    I lup SG, but SG don't love me...

  3. #43
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    Default Re: good luck to all A level students!

    Quote Originally Posted by Sjourn View Post
    Where did u dig that up?
    dun tell u...
    Logging Off. "You have 2,631 messages stored, of a total 400 allowed." don't PM me.

  4. #44
    Member Static's Avatar
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    Default Re: Good luck to all A level students!

    Gimme a C
    CANON

    Gimme a F
    FUJI FLIM

    Gimme a P
    PENTAX

    Which brand u prefer ?
    陳綺貞 2010 [夏季練習曲] 巡迴演唱會 Cheer Concert 13 Nov 2010 MAX Pavilion@Singapore Expo

  5. #45
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    Default Re: Good luck to all A level students!

    Quote Originally Posted by Static View Post
    Gimme a C
    CANON

    Gimme a F
    FUJI FLIM

    Gimme a P
    PENTAX

    Which brand u prefer ?
    just wonder if u change Pentax to Minolta... wat kinda reaction will u get...
    Logging Off. "You have 2,631 messages stored, of a total 400 allowed." don't PM me.

  6. #46
    Senior Member +evenstar's Avatar
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    Default Re: Good luck to all A level students!

    Quote Originally Posted by Static View Post
    Gimme a C
    CANON

    Gimme a F
    FUJI FLIM

    Gimme a P
    PENTAX

    Which brand u prefer ?
    got P grade meh? only A B C D E O F (or A B C D E S U for new syllabus)...am i missing sth here?
    Last edited by +evenstar; 2nd November 2006 at 06:26 PM.
    eat. drink. shoot

  7. #47
    Senior Member redstone's Avatar
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    Default Re: Good luck to all A level students!

    Quote Originally Posted by Sjourn View Post
    Have you all ever heard of this story:

    The QNS for GP: "WHAT IS COURAGE?"

    The sudent wrote:" THIS IS COURAGE." and handed up the paper.

    He got an A for it, with the remarks "Please don't ever attempt this stunt again".



    This happened in my sec school.

  8. #48
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    Default Re: Good luck to all A level students!

    Quote Originally Posted by redstone View Post


    This happened in my sec school.
    Wah...u so old arh?
    I lup SG, but SG don't love me...

  9. #49
    Senior Member redstone's Avatar
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    Default Re: Good luck to all A level students!

    Quote Originally Posted by Sjourn View Post
    Wah...u so old arh?
    I 18 only la!

    Got someone in my sec school wrote this before...

  10. #50

    Default Re: Good luck to all A level students!

    hey guys, if we have a small sample, but we know the population variance, do we still use t-test? or do we still stick to z-test?

  11. #51
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    Default Re: Good luck to all A level students!

    Quote Originally Posted by Del_CtrlnoAlt View Post
    just wonder if u change Pentax to Minolta... wat kinda reaction will u get...
    coming from you, NO reaction whatsoever...
    I lup SG, but SG don't love me...

  12. #52
    Senior Member +evenstar's Avatar
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    Default Re: Good luck to all A level students!

    Quote Originally Posted by satay16 View Post
    hey guys, if we have a small sample, but we know the population variance, do we still use t-test? or do we still stick to z-test?
    variance known and n≥50, use Z-test
    variance unknown and n≥50, use Z test, use unbiased estimate to find s^2
    variance unknown and n<50, use t-test with n-1 deg of freedom and s^2 for unbiased estimate.

    oh man if you still don't know this, go read up on your stats! testing questions are a giveaway!
    eat. drink. shoot

  13. #53

    Default Re: Good luck to all A level students!

    Quote Originally Posted by +evenstar View Post
    variance known and n≥50, use Z-test
    variance unknown and n≥50, use Z test, use unbiased estimate to find s^2
    variance unknown and n<50, use t-test with n-1 deg of freedom and s^2 for unbiased estimate.

    oh man if you still don't know this, go read up on your stats! testing questions are a giveaway!
    yeah. me question is variance known and n<50. hmm.....on second thought, nvm, for some reasons, this kind of question nv came out.
    Last edited by satay16; 2nd November 2006 at 10:13 PM.

  14. #54

    Default Re: Good luck to all A level students!

    OMG what are those.... haix. further maths students.... me c-maths also CMI liao xD

  15. #55
    Senior Member +evenstar's Avatar
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    Default Re: Good luck to all A level students!

    Quote Originally Posted by satay16 View Post
    yeah. me question is variance known and n<50. hmm.....on second thought, nvm, for some reasons, this kind of question nv came out.
    won't have this type of question iirc...
    eat. drink. shoot

  16. #56

    Default Re: Good luck to all A level students!

    Quote Originally Posted by +evenstar View Post
    won't have this type of question iirc...
    guess so. hope this year fm dun siao siao last batch so give crazy questions.

  17. #57
    Senior Member +evenstar's Avatar
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    Default Re: Good luck to all A level students!

    Quote Originally Posted by Timber Wolf View Post
    OMG what are those.... haix. further maths students.... me c-maths also CMI liao xD
    haha...qx..with a GC, stats is no kick...wait till i show you the regression formula..you'll really peng then
    eat. drink. shoot

  18. #58
    Senior Member +evenstar's Avatar
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    Default Re: Good luck to all A level students!

    Quote Originally Posted by satay16 View Post
    guess so. hope this year fm dun siao siao last batch so give crazy questions.
    here's stats summary for all! good luck on tuesday!

    eat. drink. shoot

  19. #59

    Default Re: Good luck to all A level students!

    Quote Originally Posted by +evenstar View Post
    here's stats summary for all! good luck on tuesday!

    ooo! ooo! i see population variance known with n<50. so z-test then. you have for confidence interval? post here too.

  20. #60
    Senior Member +evenstar's Avatar
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    Default Re: Good luck to all A level students!

    where are your notes? you should know these at the back of your head already!

    CLT


    CI


    CI *THIS IS IMPORTANT!* use the correct "p" value! many candidates mix up the values to use!
    Last edited by +evenstar; 2nd November 2006 at 10:34 PM.
    eat. drink. shoot

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