Pearson Edexcel A Level (GCE) Statistics Data and Probability Paper 1

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Pearson Edexcel Level 3 GCE
Thursday 5 June 2025
Morning (Time: 2 hours) Paper
reference 9ST0/01
Statistics
 


Advanced
PAPER 1: Data and Probability

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 9 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


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, 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




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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)
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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.




90 95 100 105 110 115 120 125 130 135 140

Figure 1
[Source: www.basketball‑reference.com]




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, Question 1 continued
(b) Compare the average and the spread of the points scored by the Los Angeles Lakers
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in these two seasons.
(4)
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(Total for Question 1 is 7 marks)




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