Results are out! Find what you need...fast. Get quick advice or join the chat
Hey there Sign in to join this conversationNew here? Join for free

The Edexcel S1 (18/05/12 - AM) Revision Thread

Announcements Posted on
Applying to Uni? Let Universities come to you. Click here to get your perfect place 20-10-2014
    • 0 followers
    Offline

    ReputationRep:
    (Original post by rommy123)
    Thats the same with me, i know all the work but in the exams i cant apply it :/
    So am I . I understand s1 FULLY. Yet in the exam, I really do not no what happens to me. I'm also in A2. wow, 1 week tomorrow. hopefully pressure wont get to me and s1 is a nice paper and we all do well.
    • 4 followers
    Offline

    ReputationRep:
    Anyone else finding probability a complete *****? I can't seem to get most of the questions right Dx
    • 16 followers
    Offline

    ReputationRep:
    (Original post by InadequateJusticex)
    Anyone else finding probability a complete *****? I can't seem to get most of the questions right Dx
    Easiest part of S1 in my opinion :confused:
    • 2 followers
    Offline

    ReputationRep:
    Hi,

    How do you do question 7 for January 2011 S1?

    I don't get it; a lot of other probability questions i get right, but this one is hard!

    There's no tuitorial for this paper on examsolutions either :/
    • 46 followers
    Offline

    ReputationRep:
    (Original post by shahofiran)
    Hi,

    How do you do question 7 for January 2011 S1?

    I don't get it; a lot of other probability questions i get right, but this one is hard!

    There's no tuitorial for this paper on examsolutions either :/
    Which part do you need help on?

    What have you tried?
    • 2 followers
    Offline

    ReputationRep:
    (Original post by raheem94)
    Which part do you need help on?

    What have you tried?
    Part a and how they get the numbers (i get how to solve the numbers given in the tree diagram, it's just 1 - whatever number given) but the others i dont get

    Also, are P(A) and P(B) independent?
    • 46 followers
    Offline

    ReputationRep:
    (Original post by shahofiran)
    Part a and how they get the numbers (i get how to solve the numbers given in the tree diagram, it's just 1 - whatever number given) but the others i dont get

    Also, are P(A) and P(B) independent?
    Part (a) has nothing difficult, you just need to consider the events.

    Example:
    Q has 4 red and 3 yellow.
    So if we pick out 2 red balls from P, then Q will contain, 6(=4+2) red balls and 3 yellow ball. So the probability of getting the red will be 6/9 = 2/3.
    • 2 followers
    Offline

    ReputationRep:
    (Original post by raheem94)
    Part (a) has nothing difficult, you just need to consider the events.

    Example:
    Q has 4 red and 3 yellow.
    So if we pick out 2 red balls from P, then Q will contain, 6(=4+2) red balls and 3 yellow ball. So the probability of getting the red will be 6/9 = 2/3.
    Ok, but which side of the tree probability diagram is for Q and for P?

    That's what i don't get.

    thanks
    • 46 followers
    Offline

    ReputationRep:
    (Original post by shahofiran)
    Ok, but which side of the tree probability diagram is for Q and for P?

    That's what i don't get.

    thanks
    Look at the diagram below:



    The red box if for picking out a ball from P, the green box is for picking out the second ball from P, the blue box is for picking out the ball from Q.
    • 0 followers
    Offline

    ReputationRep:
    (Original post by InadequateJusticex)
    Anyone else finding probability a complete *****? I can't seem to get most of the questions right Dx
    thats the only topic i find really hard!
    • 0 followers
    Offline

    ReputationRep:
    (Original post by stuck18)
    So am I . I understand s1 FULLY. Yet in the exam, I really do not no what happens to me. I'm also in A2. wow, 1 week tomorrow. hopefully pressure wont get to me and s1 is a nice paper and we all do well.
    Im doing As, I got a C in my mock but really want A/B
    • 2 followers
    Offline

    ReputationRep:
    (Original post by raheem94)
    Look at the diagram below:



    The red box if for picking out a ball from P, the green box is for picking out the second ball from P, the blue box is for picking out the ball from Q.
    Thanks so much!

    It's easy lol, but when i saw it for the first time i was life WTF!?!?!?!?! :P

    Can't believe this question alone makes up just over 20% of the paper.
    • 16 followers
    Offline

    ReputationRep:
    Anyone else doing S1 and D1 on the same day? Which are you doing first?

    I'm not sure which to do first, any ideas??
    • 3 followers
    Offline

    ReputationRep:
    (Original post by Zhy)
    Anyone else doing S1 and D1 on the same day? Which are you doing first?

    I'm not sure which to do first, any ideas??
    im not doin both but i would do your weakest exam first.
    • 1 follower
    Offline

    ReputationRep:
    I HATE S1! i took stats instead of mechanics because it was supposed to be the 'easier' one...it's so horrible, i hate that if you get one part of the question wrong then the whole question is wrong and you end up with a D :|
    • 16 followers
    Offline

    ReputationRep:
    (Original post by anniemcgarvie)
    I HATE S1! i took stats instead of mechanics because it was supposed to be the 'easier' one...it's so horrible, i hate that if you get one part of the question wrong then the whole question is wrong and you end up with a D :|
    This does not happen if it only happens with one question. There are error carried forward marks for cases like this. If you are getting a D it is probably for another reason.
    • 0 followers
    Offline

    ReputationRep:
    (Original post by Zhy)
    Anyone else doing S1 and D1 on the same day? Which are you doing first?

    I'm not sure which to do first, any ideas??
    I'm doing D1 first because I hate it so much and just want to get rid of it as soon as possible...

    It's infuriatingly boring.
    • 16 followers
    Offline

    ReputationRep:
    (Original post by J10)
    I'm doing D1 first because I hate it so much and just want to get rid of it as soon as possible...

    It's infuriatingly boring.
    But it's also quite easy... unfortunately you really have to concentrate in not making a silly error. Although there are lots of error carried forward marks (and for good reason) it's so easy to mess up something little on a bubble sort and not notice because it's surrounded by 50 other numbers.

    M2 and D2 on the same day too :mad:
    • 0 followers
    Offline

    ReputationRep:
    (Original post by Zhy)
    This does not happen if it only happens with one question. There are error carried forward marks for cases like this. If you are getting a D it is probably for another reason.
    Haha, that's harsh. My maths teacher is harsh and doesn't give you any carry-on marks, maybe the person you're replying to is in the same boat.
    • 16 followers
    Offline

    ReputationRep:
    (Original post by StudentAnon)
    Haha, that's harsh. My maths teacher is harsh and doesn't give you any carry-on marks, maybe the person you're replying to is in the same boat.
    This is possible if it happened on multiple questions and was marked by a teacher... but to an examiner they won't be that harsh. They will not give you 0/10 if you got sinx = 4/5 instead of sinx = 3/5. You will most likely score more than half the marks (possibly only dropping one or two depending on the mark scheme).
Updated: June 12, 2012
New on TSR

A-Level Results Day

Is it about making your parents proud?

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