Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel International Advanced Level
Time 1 hour 30 minutes
Paper
reference WST01/01
Mathematics
International Advanced Subsidiary/Advanced Level
Statistics S1
You must have: Total Marks
Mathematical Formulae and Statistical Tables (Yellow), calculator
Candidates may use any calculator permitted by Pearson regulations.
Calculators must not have the facility for symbolic algebra manipulation,
differentiation and integration, or 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. Answers
• Values
without working may not gain full credit.
from the statistical tables should be quoted in full. If a calculator is used
• Inexact answers should be given to three significant figures unless otherwise stated.
instead of the tables, the value should be given to an equivalent degree of accuracy.
Information
•• AThere
booklet ‘Mathematical Formulae and Statistical Tables’ is provided.
• – use this asfora guide
are 6 questions in this question paper. The total mark for this paper is 75.
The marks each question are shown in brackets
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
*P72072A0124*
P72072A
©2023 Pearson Education Ltd.
J:1/1/1/
,1. The histogram shows the times taken, t minutes, by each of 100 people to
swim 500 metres.
Frequency
density
0
0 5 10 15 20 25 30 35 40
Time taken (t minutes)
(a) Use the histogram to complete the frequency table for the times taken by the
100 people to swim 500 metres.
Time taken (t minutes) 5 – 10 10 – 14 14 – 18 18 – 25 25 – 40
Frequency ( f ) 10 16 24
(1)
(b) Estimate the number of people who took less than 16 minutes to swim 500 metres.
(2)
(c) Find an estimate for the mean time taken to swim 500 metres.
(2)
Given that ∑ ft 2
= 41 033
(d) find an estimate for the standard deviation of the times taken to swim 500 metres.
(2)
Given that Q3 = 23
(e) use linear interpolation to estimate the interquartile range of the times taken to
swim 500 metres.
(3)
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2
*P72072A0224*
, Question 1 continued
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*P72072A0324* Turn over
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel International Advanced Level
Time 1 hour 30 minutes
Paper
reference WST01/01
Mathematics
International Advanced Subsidiary/Advanced Level
Statistics S1
You must have: Total Marks
Mathematical Formulae and Statistical Tables (Yellow), calculator
Candidates may use any calculator permitted by Pearson regulations.
Calculators must not have the facility for symbolic algebra manipulation,
differentiation and integration, or 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. Answers
• Values
without working may not gain full credit.
from the statistical tables should be quoted in full. If a calculator is used
• Inexact answers should be given to three significant figures unless otherwise stated.
instead of the tables, the value should be given to an equivalent degree of accuracy.
Information
•• AThere
booklet ‘Mathematical Formulae and Statistical Tables’ is provided.
• – use this asfora guide
are 6 questions in this question paper. The total mark for this paper is 75.
The marks each question are shown in brackets
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
*P72072A0124*
P72072A
©2023 Pearson Education Ltd.
J:1/1/1/
,1. The histogram shows the times taken, t minutes, by each of 100 people to
swim 500 metres.
Frequency
density
0
0 5 10 15 20 25 30 35 40
Time taken (t minutes)
(a) Use the histogram to complete the frequency table for the times taken by the
100 people to swim 500 metres.
Time taken (t minutes) 5 – 10 10 – 14 14 – 18 18 – 25 25 – 40
Frequency ( f ) 10 16 24
(1)
(b) Estimate the number of people who took less than 16 minutes to swim 500 metres.
(2)
(c) Find an estimate for the mean time taken to swim 500 metres.
(2)
Given that ∑ ft 2
= 41 033
(d) find an estimate for the standard deviation of the times taken to swim 500 metres.
(2)
Given that Q3 = 23
(e) use linear interpolation to estimate the interquartile range of the times taken to
swim 500 metres.
(3)
_____________________________________________________________________________________
_____________________________________________________________________________________
2
*P72072A0224*
, Question 1 continued
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3
*P72072A0324* Turn over
