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    (Original post by ihatehannah)
    yess knew it!
    Did you get 6.2 ?
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    (Original post by nisha.sri)
    Did you get 6.2 ?
    6cm
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    (Original post by nisha.sri)
    I got like 0.8
    150 I got
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    (Original post by nisha.sri)
    Oh ok ... I swear it's secondary
    It was secondary
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    (Original post by DD2508)
    What did everyone get for that question which was about flipping a coin and we had to say how many ppl downloaded music illegally?
    I got 500 for part a- because P(head) is obviously 50%
    part b 60- because 560 minus people who got head= 560-500
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    (Original post by ihatehannah)
    defo primary as the company itself is conducting the survey
    It is secondary because they're getting the data from hospitals not weighing/measuring babies themselves
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    (Original post by tab193)
    It is secondary because they're getting the data from hospitals not weighing/measuring babies themselves
    thats what i put.. the question said ASK and it was data for the previous year.


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    (Original post by Hadleigh2k11)
    Yes I got that it's 0.6 + 0.5 = 1.1 - 0.25 = 0.85
    Yes!!! Most others at my school got other answers, and I was starting to doubt my method was right.
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    (Original post by harry_16)
    Did anyone else get 150 forthe gradient?


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    I did!
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    what about P(X) x P(Y)?
    I got 0.15... or was it 0.35?
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    (Original post by tab193)
    I did!
    I think I got 140.
    Did you divide by 12?
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    Does anyone have an unofficial mark scheme?
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    (Original post by M4keen04)
    I think I got 140.
    Did you divide by 12?
    I can't really remember what I did I just remember my answer
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    (Original post by ihatehannah)
    fairly certain its 6cm, confirmed it with alot of people. 25/ r squared = N/n, idkkkkkk cud be wrong
    I'm pretty sure it's right. Revised & practised this exacet type of Q night before.

    I wrote 6.02 instead of rounding to 6 is that still correct?
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    Anyone know the shape of the normal distribution curve? I put 'bell shape' don't know why i couldn't think... [1]
    And the question about what percentage lies between 2 s.d
    I put 2sd is 0.4 x 2 = 0.8 and got 91.6 % ...
    And the question about is it normally distributed? [2]
    I put no because it has to be 95% or 99.8%, where as its 91.6%.. [2]
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    (Original post by nisha.sri)
    Oh ok ... I swear it's secondary
    It's primary because the company was doing the investigation and they collected the data so it was first hand
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    (Original post by Hadleigh2k11)
    Anyone know the shape of the normal distribution curve? I put 'bell shape' don't know why i couldn't think... [1]
    And the question about what percentage lies between 2 s.d
    I put 2sd is 0.4 x 2 = 0.8 and got 91.6 % ...
    And the question about is it normally distributed? [2]
    I put no because it has to be 95% or 99.8%, where as its 91.6%.. [2]
    It was positively skewed, and yep that's what I put!


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    (Original post by Hadleigh2k11)
    Anyone know the shape of the normal distribution curve? I put 'bell shape' don't know why i couldn't think... [1]
    And the question about what percentage lies between 2 s.d
    I put 2sd is 0.4 x 2 = 0.8 and got 91.6 % ...
    And the question about is it normally distributed? [2]
    I put no because it has to be 95% or 99.8%, where as its 91.6%.. [2]
    I wrote 100% are between 2 sds. I did mean - &+ 0.8 and saw that all the numbers were between the limits.
    did anyone else do that? I had a feeling I did it wrong...
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    (Original post by harry_16)
    It was positively skewed, and yep that's what I put!


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    You got 91.6% ?
    And also the question about histogram a and the first 21 people , what did you get? I got 110 but i don't think it's right
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    (Original post by ihatehannah)
    6cm
    That should be right majority got that answer
 
 
 
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