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# Edexcel S1 - 15th June, 2016 [Exam Discussion] watch

1. Final Predictions for the year
C1 - 61
C2 - 63
S1 - 59
2. I thought that height would be 34 because frequency density=frequency/class width
3. (Original post by lfcrules)
What did you get for t and u ?
0.03 for one and 0.22 for the other I think
4. Venn diagram... A) 0
B) 0.03
C) 0.22
D). 45 and 5/17
E) 33
Is what I got
5. (Original post by Batman_Stark)
0.03 for one and 0.22 for the other I think
Yesss i got this!!
6. (Original post by mibz515)
How can it be 17 when the frequency of the class width was also 17 people, Who got 8.5cm/34cm
Because K was 0.5, constant of proportion
7. (Original post by gracebromby)
Who got 0.15 and 0175 for p and q (cant remember what order each one was)
Yeah

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8. How did the value of the the extra baby affect the mean and thr standard deviation.

Was that dude right to model around the normal distribution?
9. (Original post by rosemondtan)
Got like 16 lmao
Same haha
10. (Original post by gracebromby)
I got 17 lol
11. Any one get 0.45 the one where sarah and ? And it was 1/X
And for the last part anyone get 0.35 and 0.45 ???
12. what question was the probabililty? was it question 4 or 5?
13. (Original post by Exavior)
Yesss i got this!!
How the hell did I get 0'13???????????
14. (Original post by MaaryaOmar)
Because didnt you have to multiply the 40 and 37 by the corresponding probabilities for each value and then add them together?
15. (Original post by Ppatel0)
Venn diagram... A) 0
B) 0.03
C) 0.22
D). 45 and 5/17
E) 33
Is what I got
0.45 and 15/37 not 5/17

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16. Unofficial markscheme?
17. (Original post by rosemondtan)
Got like 16 lmao
I got 16 too
18. (Original post by Ppatel0)
Venn diagram... A) 0
B) 0.03
C) 0.22
D). 45 and 5/17
E) 33
Is what I got
That's also what I got but i don't remember what D was
19. (Original post by Exavior)
Any one get 0.45 the one where sarah and ? And it was 1/X
And for the last part anyone get 0.35 and 0.45 ???
e(r) = 0.45, second bit first part 0.475, second but second part 0.375

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20. (Original post by Exavior)
How did the value of the the extra baby affect the mean and thr standard deviation.

Was that dude right to model around the normal distribution?
Lowers SD because the average spread is less

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