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  1. M

    Mathematics: Post your doubts here!

    for 9709_s14_qp_62 Time (seconds) is a type of continuous data --> the values are representing class boundaries for 9709_s11_qp_63 Mark is a type of discrete data --> you should write the intervals: <10 means until and including 9, < 20 means until and including 19 etc so the intervals are...
  2. M

    Mathematics: Post your doubts here!

    you have a cumulative frequency table, so the values given there are representing the upper bounds of each interval q4i - the interval is 45 to 50 (45≤median<50) q4iv - the class boundaries as used :)
  3. M

    why? I can delete the comments if those affected you

    why? I can delete the comments if those affected you
    • Meleko
    • Profile post comment
  4. M

    Mathematics: Post your doubts here!

    in statistics "A or B" means "A or B or both" P(A or B)=P(A)+P(B)-P(A and B) P(A given B) = P(A|B)= P(A and B)/P(B) so P(D)=0.25, P(C)=0.4, P(C and D)=0.15 i) P(D or C)=0.25+0.4-0.15=0.5 ii) P(D or C but not both)=0.5-0.15=0.35 iii)P(D|C)=P(D and C)/P(C)=0.15/0.4=0.375 iv) P(C`|D)=0.1/0.25=0.4...
  5. M

    IB Resources (Past Papers [N09 - N14], Specimen Papers, QB, Subject Report, IA Examples, Ebooks,etc)

    can you please send me all SL maths papers to [email protected] Pleaseeeeeee.. no mather in what format you have them. Thank you!
  6. M

    Mathematics: Post your doubts here!

    it's because you selected one person already, so the total number is 193 when you select the second one (tree diagram without replacement might help you in this case or use combinations)
  7. M

    Mathematics: Post your doubts here!

    You just copied full 32!!! for 12 you changed something and you did a mistake that is not affecting the result (question 6 ii) .. in paper 12 you used the papers from justpastpapers.com to make yours.. You can not use the same notations and have the same way of thinking.. and I can prove that...
  8. M

    Mathematics: Post your doubts here!

    Dear Thought blocker... I think it took you a lot of time to type the solution.. did you also solve the paper? or you just copied from someone else? You added a few more words I must admit.. Next time don't take credits for something that is not yours.. you even made your small pics.. wasn't...
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