ACTUAL 2025 AQA AS FURTHER MATHEMATICS Paper 2 Statistics Question Paper & Mark Scheme (Merged) Friday 16 May 2025 [VERIFIED]

ACTUAL 2025 AQA AS FURTHER MATHEMATICS Paper 2 Statistics Question Paper & Mark
Scheme (Merged) Friday 16 May 2025 [VERIFIED]

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Answer all questions in the spaces provided.



1 The continuous random variable A has probability density function f (a)
and variance 16

It is given that f (a) = 0 for a < 0 and ∫ 0
a2f (a)da = 52

Find the mean of A

Circle your answer.
[1 mark]

4 6 36 68




2 The random variable X ~ Po(6.50)

The random variable Y ~ Po(20.54)

The random variables X and Y are independent.

Find the standard deviation of X + Y

Circle your answer.
[1 mark]

3.75 5.20 14.04 27.04



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G/Jun25/7366/2S

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3 The random variable T has a discrete uniform distribution and takes
values 1, 2, 3, …, 17

Find the standard deviation of T

Circle your answer.
[1 mark]

8√ 3 1
2√ 6 21 24
3 3




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