A LEVEL STATISTICS: Actual June 2025 PAST PAPER 1: Data and Probability. All
Assessment Questions & Mark Scheme [Edexcel 9ST0/01]
Exam Resource Summary
The June 2025 Edexcel A Level Statistics 9STO/01 – Paper 1: Data and Probability – Merged Question
Paper & Mark Scheme document integrates the official examination paper with its full mark scheme.
This paper assesses students’ understanding of statistical concepts and techniques, including data
collection, representation, probability theory, and interpretation of statistical information. The merged
format presents each question alongside its marking criteria, providing clear guidance on examiner
expectations, mark allocation, and question structure. This resource supports targeted revision,
development of analytical and problem-solving skills, and practice in applying statistical methods to
real-world scenarios, making it essential for preparation for the June 2025 Edexcel A Level Statistics
Paper 1 examination.
, Answer ALL questions. Write your answers in the spaces provided.
1 The stem and leaf diagram below shows the number of points scored by the
DO NOT WRITE IN THIS AREA
Los Angeles Lakers basketball team in the first 19 games of the 2019–2020 season.
9|5 represents
Points Totals
95 points
9 5 5 9 (3)
10 2 3 4 9 (4)
11 2 4 4 8 9 (5)
12 0 0 0 2 3 5 (6)
13 0 (1)
[Source: www.basketball‑reference.com]
(a) Find the median and the interquartile range for these data.
(3)
DO NOT WRITE IN THIS AREA
Figure 1 shows a box and whisker diagram containing information about the number
of points scored by the Los Angeles Lakers basketball team in the first 19 games of the
2020–2021 season.
DO NOT WRITE IN THIS AREA
90 95 100 105 110 115 120 125 130 135 140
Figure 1
[Source: www.basketball‑reference.com]
2
■■■■
, Question 1 continued
(b) Compare the average and the spread of the points scored by the Los Angeles Lakers
DO NOT WRITE IN THIS AREA
in these two seasons.
(4)
DO NOT WRITE IN THIS AREA
(Total for Question 1 is 7 marks)
DO NOT WRITE IN THIS AREA
3
■■■■ Turn over
, 2 The figures below show the amount, in £ millions, of UK bilateral aid given to Pakistan
for each year of the years 2014 to 2019
DO NOT WRITE IN THIS AREA
305 331 402 463 374 266
[Source: dfid.gov.uk]
The table gives a summary of the amount, in £ millions, of UK bilateral aid given to
Ethiopia for each of the years 2014 to 2019
Mean Standard deviation
295.5 36.1
[Source: dfid.gov.uk]
By comparing the means and standard deviations of the bilateral aid given to each
country, Brian reaches a conclusion that the UK has given more consistent bilateral aid
to Pakistan than to Ethiopia, between 2014 and 2019
Assess the validity of this conclusion.
DO NOT WRITE IN THIS AREA
(5)
DO NOT WRITE IN THIS AREA
4
■■■■
Assessment Questions & Mark Scheme [Edexcel 9ST0/01]
Exam Resource Summary
The June 2025 Edexcel A Level Statistics 9STO/01 – Paper 1: Data and Probability – Merged Question
Paper & Mark Scheme document integrates the official examination paper with its full mark scheme.
This paper assesses students’ understanding of statistical concepts and techniques, including data
collection, representation, probability theory, and interpretation of statistical information. The merged
format presents each question alongside its marking criteria, providing clear guidance on examiner
expectations, mark allocation, and question structure. This resource supports targeted revision,
development of analytical and problem-solving skills, and practice in applying statistical methods to
real-world scenarios, making it essential for preparation for the June 2025 Edexcel A Level Statistics
Paper 1 examination.
, Answer ALL questions. Write your answers in the spaces provided.
1 The stem and leaf diagram below shows the number of points scored by the
DO NOT WRITE IN THIS AREA
Los Angeles Lakers basketball team in the first 19 games of the 2019–2020 season.
9|5 represents
Points Totals
95 points
9 5 5 9 (3)
10 2 3 4 9 (4)
11 2 4 4 8 9 (5)
12 0 0 0 2 3 5 (6)
13 0 (1)
[Source: www.basketball‑reference.com]
(a) Find the median and the interquartile range for these data.
(3)
DO NOT WRITE IN THIS AREA
Figure 1 shows a box and whisker diagram containing information about the number
of points scored by the Los Angeles Lakers basketball team in the first 19 games of the
2020–2021 season.
DO NOT WRITE IN THIS AREA
90 95 100 105 110 115 120 125 130 135 140
Figure 1
[Source: www.basketball‑reference.com]
2
■■■■
, Question 1 continued
(b) Compare the average and the spread of the points scored by the Los Angeles Lakers
DO NOT WRITE IN THIS AREA
in these two seasons.
(4)
DO NOT WRITE IN THIS AREA
(Total for Question 1 is 7 marks)
DO NOT WRITE IN THIS AREA
3
■■■■ Turn over
, 2 The figures below show the amount, in £ millions, of UK bilateral aid given to Pakistan
for each year of the years 2014 to 2019
DO NOT WRITE IN THIS AREA
305 331 402 463 374 266
[Source: dfid.gov.uk]
The table gives a summary of the amount, in £ millions, of UK bilateral aid given to
Ethiopia for each of the years 2014 to 2019
Mean Standard deviation
295.5 36.1
[Source: dfid.gov.uk]
By comparing the means and standard deviations of the bilateral aid given to each
country, Brian reaches a conclusion that the UK has given more consistent bilateral aid
to Pakistan than to Ethiopia, between 2014 and 2019
Assess the validity of this conclusion.
DO NOT WRITE IN THIS AREA
(5)
DO NOT WRITE IN THIS AREA
4
■■■■
