Mark Scheme (Results)
Summer 2026
Pearson Edexcel GCSE (9 – 1)
In Statistics (1ST0)
Higher Paper 2H
,Edexcel and BTEC Qualifications
Edexcel and BTEC qualifications are awarded by Pearson, the UK’s
largest awarding body. We provide a wide range of qualifications
including academic, vocational, occupational and specific
programmes for employers. For further information visit our
qualifications websites at www.edexcel.com or www.btec.co.uk.
Alternatively, you can get in touch with us using the details on our
contact us page at www.edexcel.com/contactus
Pearson: helping people progress, everywhere
Pearson aspires to be the world’s leading learning company. Our aim is to help
everyone progress in their lives through education. We believe in every kind of
learning, for all kinds of people, wherever they are in the world. We’ve been
involved in education for over 150 years, and by working across 70 countries, in
100 languages, we have built an international reputation for our commitment to
high standards and raising achievement through innovation in education. Find
out more about how we can help you and your students at:
www.pearson.com/uk
Summer 2026
Question Paper Log Number P79587A
Publications Code 1ST0_2H_MS_2606
All the material in this publication is copyright
© Pearson Education Ltd 2026
,General Marking Guidance
These notes offer general guidance, but the specific notes for examiners
appertaining to individual questions take precedence.
1 All candidates must receive the same treatment. Examiners must mark the
last candidate in exactly the same way as they mark the first.
Where some judgement is required, mark schemes will provide the
principles by which marks will be awarded; exemplification/indicative
content will not be exhaustive. When examiners are in doubt regarding the
application of the mark scheme to a candidate’s response, the response
should be sent to review.
2 All the marks on the mark scheme are designed to be awarded; mark
schemes should be applied positively. Examiners should also be prepared
to award zero marks if the candidate’s response is not worthy of credit
according to the mark scheme. If there is a wrong answer (or no answer)
indicated on the answer line always check the working in the body of the
script (and on any diagrams), and award any marks appropriate from the
mark scheme.
Questions where working is not required: In general, the correct answer
should be given full marks.
Questions that specifically require working: In general, candidates who
do not show working on this type of question will get no marks – full details
will be given in the mark scheme for each individual question.
3 Crossed out work
This should be marked unless the candidate has replaced it with an
alternative response.
4 Choice of method
If there is a choice of methods shown, mark the method that leads to the
answer given on the answer line.
If no answer appears on the answer line then mark both methods as far as
they are identical and award these marks.
5 Incorrect method
If it is clear from the working that the “correct” answer has been obtained
from incorrect working, award 0 marks.
6 Follow through marks
Follow through marks which involve a single stage calculation can be
awarded without working as you can check the answer, but if ambiguous
do not award.
, Follow through marks which involve more than one stage of calculation
can only be awarded on sight of the relevant working, even if it appears
obvious that there is only one way you could get the answer given.
7 Ignoring subsequent work
It is appropriate to ignore subsequent work when the additional work
does not change the answer in a way that is inappropriate for the question
or its context. (eg an incorrectly cancelled fraction when the unsimplified
fraction would gain full marks).
It is not appropriate to ignore subsequent work when the additional work
essentially makes the answer incorrect (eg incorrect algebraic
simplification).
8 Probability
Probability answers must be given as a fraction, percentage or decimal. If
a candidate gives a decimal equivalent to a probability, this should be
written to at least 2 decimal places (unless tenths).
Incorrect notation should lose the accuracy marks, but be awarded any
implied method marks.
If a probability fraction is given then cancelled incorrectly, ignore the
incorrectly cancelled answer.
9 Range of answers
Unless otherwise stated, when an answer is given as a range (eg 3.5 – 4.2)
then this is inclusive of the end points (eg 3.5, 4.2) and all numbers within
the range.
Summer 2026
Pearson Edexcel GCSE (9 – 1)
In Statistics (1ST0)
Higher Paper 2H
,Edexcel and BTEC Qualifications
Edexcel and BTEC qualifications are awarded by Pearson, the UK’s
largest awarding body. We provide a wide range of qualifications
including academic, vocational, occupational and specific
programmes for employers. For further information visit our
qualifications websites at www.edexcel.com or www.btec.co.uk.
Alternatively, you can get in touch with us using the details on our
contact us page at www.edexcel.com/contactus
Pearson: helping people progress, everywhere
Pearson aspires to be the world’s leading learning company. Our aim is to help
everyone progress in their lives through education. We believe in every kind of
learning, for all kinds of people, wherever they are in the world. We’ve been
involved in education for over 150 years, and by working across 70 countries, in
100 languages, we have built an international reputation for our commitment to
high standards and raising achievement through innovation in education. Find
out more about how we can help you and your students at:
www.pearson.com/uk
Summer 2026
Question Paper Log Number P79587A
Publications Code 1ST0_2H_MS_2606
All the material in this publication is copyright
© Pearson Education Ltd 2026
,General Marking Guidance
These notes offer general guidance, but the specific notes for examiners
appertaining to individual questions take precedence.
1 All candidates must receive the same treatment. Examiners must mark the
last candidate in exactly the same way as they mark the first.
Where some judgement is required, mark schemes will provide the
principles by which marks will be awarded; exemplification/indicative
content will not be exhaustive. When examiners are in doubt regarding the
application of the mark scheme to a candidate’s response, the response
should be sent to review.
2 All the marks on the mark scheme are designed to be awarded; mark
schemes should be applied positively. Examiners should also be prepared
to award zero marks if the candidate’s response is not worthy of credit
according to the mark scheme. If there is a wrong answer (or no answer)
indicated on the answer line always check the working in the body of the
script (and on any diagrams), and award any marks appropriate from the
mark scheme.
Questions where working is not required: In general, the correct answer
should be given full marks.
Questions that specifically require working: In general, candidates who
do not show working on this type of question will get no marks – full details
will be given in the mark scheme for each individual question.
3 Crossed out work
This should be marked unless the candidate has replaced it with an
alternative response.
4 Choice of method
If there is a choice of methods shown, mark the method that leads to the
answer given on the answer line.
If no answer appears on the answer line then mark both methods as far as
they are identical and award these marks.
5 Incorrect method
If it is clear from the working that the “correct” answer has been obtained
from incorrect working, award 0 marks.
6 Follow through marks
Follow through marks which involve a single stage calculation can be
awarded without working as you can check the answer, but if ambiguous
do not award.
, Follow through marks which involve more than one stage of calculation
can only be awarded on sight of the relevant working, even if it appears
obvious that there is only one way you could get the answer given.
7 Ignoring subsequent work
It is appropriate to ignore subsequent work when the additional work
does not change the answer in a way that is inappropriate for the question
or its context. (eg an incorrectly cancelled fraction when the unsimplified
fraction would gain full marks).
It is not appropriate to ignore subsequent work when the additional work
essentially makes the answer incorrect (eg incorrect algebraic
simplification).
8 Probability
Probability answers must be given as a fraction, percentage or decimal. If
a candidate gives a decimal equivalent to a probability, this should be
written to at least 2 decimal places (unless tenths).
Incorrect notation should lose the accuracy marks, but be awarded any
implied method marks.
If a probability fraction is given then cancelled incorrectly, ignore the
incorrectly cancelled answer.
9 Range of answers
Unless otherwise stated, when an answer is given as a range (eg 3.5 – 4.2)
then this is inclusive of the end points (eg 3.5, 4.2) and all numbers within
the range.
