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Edexcel A-level Statistics Paper 3 - 17th June 2025 [Exam Chat]

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How did your Edexcel A-level Statistics Paper 3 exam go today?

Edexcel A-Level Statistics Paper 3: Statistics in practice (9ST0 03) - Tuesday 17th June 2025 [Exam Chat]
Welcome to the exam discussion thread for this exam.
Introduce yourself! Let others know what you're aiming for in your exams, what you are struggling with in your revision or anything else.
Wishing you all the best of luck. :yy:

General Information
Date/Time: Tuesday 17th June 2025 PM
Length: 2h
Good luck!
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Reply 1

kanyecasino

Any predictions for this paper?

Reply 2

dontcare2

good luck everyone

Reply 3

Xavillama

Yo anyone got any ideas on what to revise for ts

Reply 4

alllllliice

How was that for everyone

Reply 5

DylanPiii

I thought it was great - better than P2 for sure

Reply 6

DylanPiii

Wasn't a massive fan of the badger question, felt like three parts were kinda all asking for the same thing

Reply 7

AAAALLLAAN

Original post

by alllllliice

How was that for everyone

got no idea how to answer those word questions so I just wrote stuff that may be relevant

Reply 8

alllllliice

Did anyone do a sign test on Q2 with France and Ireland and accepted H0?

Reply 9

AAAALLLAAN

Original post

by alllllliice

Did anyone do a sign test on Q2 with France and Ireland and accepted H0?

yes

Reply 10

ocollier

Original post

by alllllliice

Did anyone do a sign test on Q2 with France and Ireland and accepted H0?

I did wilcoxon signed rank

Reply 11

ocollier

Anyone get 17.35 ish for the CHI Squared, question 3B

Reply 12

ocollier

For question 3C comparing mean times for London or Berlin marathons did anyone get 0.828?

Reply 13

ocollier

Anyone get 4.018 and 5.382 for the confidence interval? Question 5

Reply 14

DylanPiii

Original post

by ocollier

Anyone get 17.35 ish for the CHI Squared, question 3B

Yeah I got 17 something

Reply 15

DylanPiii

Original post

by ocollier

For question 3C comparing mean times for London or Berlin marathons did anyone get 0.828?

Yes

Reply 16

ocollier

Original post

by alllllliice

Agree with all of them but the confidence interval, how did u do it? I calculated sample s and then used 9 degrees of freedom with t score? Not sure tho

I calculated the mean and standard deviation from the x and x^2 with the formula from the formula book and then used 1.96 as the Z value did 4.7+/- 1.96 x standard deviation/ sq root N

Reply 17

DylanPiii

Original post

by ocollier

I did wilcoxon signed rank

I didn't think you could cause it said the distribution was not symmetrical or something

Reply 18

ocollier

Original post

by DylanPiii

I didn't think you could cause it said the distribution was not symmetrical or something

Yeah, I thought I messed it up, I forgot about the sign test in the moment

Reply 19

huvutgdyd

france ireland question you had to do paired t test pretty sure , cause it was a test for difference and them saying it wasn’t symmetrically distributed meant wilcoxon wasn’t valid . also the confidence interval u had to calculate sample variance and use t distribution

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