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# gcse statistics 27th June, how did you find it

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1. (Original post by ihatehannah)
yess knew it!
Did you get 6.2 ?
2. (Original post by nisha.sri)
Did you get 6.2 ?
6cm
3. (Original post by nisha.sri)
I got like 0.8
150 I got
4. (Original post by nisha.sri)
Oh ok ... I swear it's secondary
It was secondary
5. (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
6. (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
7. (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.

Posted from TSR Mobile
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.
9. (Original post by harry_16)
Did anyone else get 150 forthe gradient?

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I did!
10. what about P(X) x P(Y)?
I got 0.15... or was it 0.35?
11. (Original post by tab193)
I did!
I think I got 140.
Did you divide by 12?
12. Does anyone have an unofficial mark scheme?
13. (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
14. (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?
15. 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]
16. (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
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!

Posted from TSR Mobile
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...
19. (Original post by harry_16)
It was positively skewed, and yep that's what I put!

Posted from TSR Mobile
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
20. (Original post by ihatehannah)
6cm
That should be right majority got that answer

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