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# AQA- Maths statistics 1b

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1. (Original post by Lehal)
cool.. and btw, for the new mean question.. i think you had to do.. 280 x (your mean calculated from previous question) divided by 175.. it has been in a past paper i think..
Yeah that makes a lot more sense than what I did... I just added 280 to the table in my calculator, with a frequency of 1. And then calculated a new mean, maybe they will have a range in which the mean can lie in?
2. (Original post by HappyBun)
Yeah that makes a lot more sense than what I did... I just added 280 to the table in my calculator, with a frequency of 1. And then calculated a new mean, maybe they will have a range in which the mean can lie in?

I did this too....i thought it was right coz all you were doing is having more letters in the same time perios got like 23 point summin and so did a lot of ppl at my school...i reckon you are right!!
3. (Original post by kitkat19)

I did this too....i thought it was right coz all you were doing is having more letters in the same time perios got like 23 point summin and so did a lot of ppl at my school...i reckon you are right!!
Ahh that has made me feel so much better! Thank you
4. (Original post by HappyBun)
Ahh that has made me feel so much better! Thank you
awww its okay....im sure youve smashed S1 !!! Am so worried about my core 2 grade...did C2 go well for you?
5. damn, i worked out the total amount of letter received over the 175 days... got somefin like over 4000 how mnay marks was it??
6. (Original post by kitkat19)
awww its okay....im sure youve smashed S1 !!! Am so worried about my core 2 grade...did C2 go well for you?
I did C2 last year, my school does C1, C2, C3, C4, S1, M1
I heard the log question was horrible, but hopefully they reduce the grade boundaries? For us it was something crazy like 53/75 for an A so they could do the same?
7. (Original post by cobra2k10)
damn, i worked out the total amount of letter received over the 175 days... got somefin like over 4000 how mnay marks was it??
It was only 2 marks
8. (Original post by HappyBun)
Yeah that makes a lot more sense than what I did... I just added 280 to the table in my calculator, with a frequency of 1. And then calculated a new mean, maybe they will have a range in which the mean can lie in?
Yeah, I did something similar aswell. Did sum of X in my calculator (something like 3000+, cant remember) then added 280 and divided by 175+1!!

I hope that was right!!! Since many of yous done something similar.
9. (Original post by Taylor_R)
Wassup brah's and gangas, im doin this exam too. Got, C2,C4,D1,S1,FP2,FP3,FP4 all this summer.
I win C1 FP1 FP2 FP3 FP4 S1 S2 M2
10. (Original post by HappyBun)
I put for the one where we had to comment on two claims that, the new standard deviation was 4.14, and that this was similar to the other standard deviation so it was valid about it being random. And I put that the means were extremely similar so that the first claim was also valid. I think it will be based on whatever you think as long as it is justified.
ah i just wrote that the standard deviation was small
11. Anyone got the paper?
12. what did you guys get in this exam?
13. (Original post by Lehal)
what did you guys get in this exam?
87 :s

You?
14. (Original post by Lehal)
what did you guys get in this exam?

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