Pearson Edexcel A-Level Mathematics Paper 1 Advanced Subsidiary/Advanced Level Statistics S1 Authentic Marking Scheme Attached

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Centre Number Candidate Number




Pearson Edexcel International Advanced Level
Wednesday 10 January 2024
Afternoon (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.

• If pencil is used for diagrams/sketches/graphs it must be dark (HB or B).
Fill in the boxes at the top of this page with your name,

••
centre number and candidate number.
Answer all questions and ensure that your answers to parts of questions are clearly labelled.
Answer the questions in the spaces provided

• – there may be more space than you need.
You should show sufficient working to make your methods clear. Answers without working

• may not gain full credit.
Values from the statistical tables should be quoted in full. If a calculator is used instead of the

•Information
tables, the value should be given to an equivalent degree of accuracy.
Inexact answers should be given to three significant figures unless otherwise stated.


•• A booklet ‘Mathematical Formulae and Statistical Tables’ is provided.

• There are 8 questions in this question paper. The total mark for this paper is 75.
The 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.

•• Try to answer every question.
Check 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


P74320A
©2024 Pearson Education Ltd.
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,1. The histogram below shows the distribution of the heights, to the nearest cm,
of 408 plants.




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Frequency
density




0 5 10 15 20 25
Height (cm)

(a) Use the histogram to complete the following table.

Height (h cm) 5h<9 9  h < 13 13  h < 15 15  h < 17 17  h < 25

Frequency 32 152 120

(2)
(b) Use interpolation to estimate the median.
(2)
The mean height of these plants is 13.2 cm correct to one decimal place.
(c) Describe the skew of these data. Give a reason for your answer.
(1)
Two of these plants are chosen at random.
(d) Estimate the probability that both of their heights are between 8 cm and 14 cm
(3)
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