Statistics Paper 3 Statistics in Practice 2020 Questions and Answers

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Centre Number Candidate Number
Pearson Edexcel
Level 3 GCE
Monday 22 June 2020
Afternoon (Time: 2 hours) Paper Reference 9ST0/03

Statistics
Advanced
Paper 3: Statistics in Practice

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,

• Answer
centre number and candidate number.
all questions and ensure that your answers to parts of questions are

• Answer
clearly 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.

• – use this asfora guide
are 6 questions in this question paper. The total mark for this paper is 80.
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



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©2020 Pearson Education Ltd.

1/1/1/1/1/

, Answer ALL questions. Write your answers in the spaces provided.
1 Teru is looking at some graphs from an official UK government publication that show
patterns of employment for civil servants (central government employees) over time.
Figure 1 shows the gender balance of each civil service grade between 2010–2017.

Most junior Most senior


Male Male Male Male Male


57% 58% 56% 56%
50%
46% 48%
45%
40% 41%
34%
Female Female Female Female Female


2010 2017 2010 2017 2010 2017 2010 2017 2010 2017
AO/AA EO SEO/HEO Grades 6 and 7 SCS

(Source: https://www.instituteforgovernment.org.uk/publications/whitehall-monitor-2018)

Figure 1

Teru says that Figure 1 shows that the total number of female civil servants has
definitely increased between 2010 and 2017.
(a) Explain whether Teru is correct or not.
(2)
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, Question 1 continued
(b) Describe two important trends shown in Figure 1.
(2)
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3
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