Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Tuesday 9 June 2026
Afternoon (Time: 2 hours) Paper
reference 9ST0/02
Statistics
Advanced
PAPER 2: Statistical Inference
You must have: Total Marks
Statistical formulae and tables booklet
Calculator
Candidates may use any calculator allowed by Pearson regulations. Calculators
must not have retrievable mathematical formulae stored in them.
Instructions
•• Use black ink or ball‑point pen.
• Fill
If pencil is used for diagrams/sketches/graphs it must be dark (HB or B).
in the boxes at the top of this page with your name,
• clearly
centre number and candidate number.
Answer all questions and ensure that your answers to parts of questions are
• Answer
labelled.
the questions in the spaces provided
• You
– there may be more space than you need.
should show sufficient working to make your methods clear.
• Unless
Answers without working may not gain full credit.
otherwise stated, inexact answers should be given to three
• Unless
significant figures.
otherwise stated, statistical tests should be carried out at the
5% significance level.
Information
•• AThere
booklet ‘Statistical formulae and tables’ is provided.
• The
are 7 questions in this question paper. The total mark for this paper is 80.
marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
Advice
•• Read each question carefully before you start to answer it.
•• Check
Try to answer every question.
your answers if you have time at the end.
If you change your mind about an answer, cross it out and put your new answer and
any working underneath.
Turn over
P79563A
©2026 Pearson Education Ltd.
P:1/1/1/1/1/
*P79563A0124*
, Answer ALL questions. Write your answers in the spaces provided.
1 In 1972, fifteen governments came together to tackle the dumping of litter and marine
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
pollution in Europe.
One of the measures the committee, known as OSPAR, investigates is the amount of
litter across different regions.
[Data source: Baseline and power analyses for the assessment of beach litter reductions in the
European OSPAR region – ScienceDirect, https://www.ospar.org]
A report, published in 2019, compared the number of items of litter, per 100 m2 survey
site, found in different locations between 2012 and 2017
A sample of 10 locations and their respective data on the number of items of litter
found, per 100 m2, for 2012 and 2017 are shown in Figure 1
Locations 2012 2017
A 52 37
B 42 38
C 30 35
D 87 74
E 64 67
F 81 74
G 60 51
H 37 45
I 71 65
J 91 81
Figure 1
Carry out a Wilcoxon signed rank test to investigate whether there has been a reduction
in litter between 2012 and 2017
Your conclusion should be in a form suitable for OSPAR to publish in a press release.
(7)
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
2
*P79563A0224*
, Question 1 continued
_____________________________________________________________________________________
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
(Total for Question 1 is 7 marks)
3
*P79563A0324* Turn over
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Tuesday 9 June 2026
Afternoon (Time: 2 hours) Paper
reference 9ST0/02
Statistics
Advanced
PAPER 2: Statistical Inference
You must have: Total Marks
Statistical formulae and tables booklet
Calculator
Candidates may use any calculator allowed by Pearson regulations. Calculators
must not have retrievable mathematical formulae stored in them.
Instructions
•• Use black ink or ball‑point pen.
• Fill
If pencil is used for diagrams/sketches/graphs it must be dark (HB or B).
in the boxes at the top of this page with your name,
• clearly
centre number and candidate number.
Answer all questions and ensure that your answers to parts of questions are
• Answer
labelled.
the questions in the spaces provided
• You
– there may be more space than you need.
should show sufficient working to make your methods clear.
• Unless
Answers without working may not gain full credit.
otherwise stated, inexact answers should be given to three
• Unless
significant figures.
otherwise stated, statistical tests should be carried out at the
5% significance level.
Information
•• AThere
booklet ‘Statistical formulae and tables’ is provided.
• The
are 7 questions in this question paper. The total mark for this paper is 80.
marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
Advice
•• Read each question carefully before you start to answer it.
•• Check
Try to answer every question.
your answers if you have time at the end.
If you change your mind about an answer, cross it out and put your new answer and
any working underneath.
Turn over
P79563A
©2026 Pearson Education Ltd.
P:1/1/1/1/1/
*P79563A0124*
, Answer ALL questions. Write your answers in the spaces provided.
1 In 1972, fifteen governments came together to tackle the dumping of litter and marine
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
pollution in Europe.
One of the measures the committee, known as OSPAR, investigates is the amount of
litter across different regions.
[Data source: Baseline and power analyses for the assessment of beach litter reductions in the
European OSPAR region – ScienceDirect, https://www.ospar.org]
A report, published in 2019, compared the number of items of litter, per 100 m2 survey
site, found in different locations between 2012 and 2017
A sample of 10 locations and their respective data on the number of items of litter
found, per 100 m2, for 2012 and 2017 are shown in Figure 1
Locations 2012 2017
A 52 37
B 42 38
C 30 35
D 87 74
E 64 67
F 81 74
G 60 51
H 37 45
I 71 65
J 91 81
Figure 1
Carry out a Wilcoxon signed rank test to investigate whether there has been a reduction
in litter between 2012 and 2017
Your conclusion should be in a form suitable for OSPAR to publish in a press release.
(7)
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
2
*P79563A0224*
, Question 1 continued
_____________________________________________________________________________________
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
(Total for Question 1 is 7 marks)
3
*P79563A0324* Turn over
