Please bcheck bthe bexamination bdetails bbelow bbefore bentering byour bcandidate binformation
Candidate b surname Other bnames
Centre bNumber Candidate b Number
Pearson Edexcel Level 3 GCE
b b b b
Thursday 25 May 2023 b b b
Afternoon Paper
breferenc
e
8MA0/21
Mathematics
Advanced Subsidiary b
PAPER 21: Statistics
b b
You bmust bhave: Total bMarks
Mathematical bFormulae band bStatistical bTables b(Green),
bcalculator
Candidates bmay buse bany bcalculator ballowed bby bPearson bregulations. bCalculators
bmust bnot bhave bthe bfacility bfor bsymbolic balgebra bmanipulation, bdifferentiation band
bintegration, bor bhave bretrievable bmathematical bformulae bstored bin bthem.
Instructions
•• Use bblack bink bor bball-point
•
If bpencil bis bused bfor bdiagrams/sketches/graphs bit bmust bbe bdark b(HB bor bB).
Fill bin bthe bboxes bat bthe btop bof bthis bpage bwith byour
bpen.
•
centre bnumber band b candidate
number.
Answer ball bquestions band bensure bthat byour banswers bto bparts bof bquestions bare bclearly
•
b
bname,
bAnswer b the
labelled. b questions
b – bthere in bbthe
bmaybbbe moreb spaces
bspace bthan byou bneed.
• You bshould bshow bsufficient bworking bto bmake byour bmethods bclear.
•
Answers bwithout bworking bmay bnot bgain bfull bcredit.
b provided
Values bfrom bstatistical btables bshould bbe bquoted bin bfull. bIf ba bcalculator bis bused
•
binstead bof b tables bthe bvalue bshould bbe bgiven bto ban bequivalent bdegree bof
baccuracy.
Inexact banswers bshould bbe bgiven bto bthree bsignificant bfigures bunless botherwise bstated.
Information
•• A bbooklet b‘Mathematical bFormulae band bStatistical bTables’ bis
The btotal bmark bfor bthis bpart bof bthe bexamination bis b30. bThere bare b5
• bThe
questions.
bmarks bfor
bprovided.
bquestion.
beach
– buse bthisbas
question
ba bguide
bare
bas bbto
shown
bhowbbin
much btimebtobspend bon beach
Advice
bbrackets
• Read beach bquestion bcarefully bbefore byou bstart bto banswer bit.
•• Try bto banswer bevery
Check byour banswers bif byou bhave btime bat bthe bend. Turn bover
question.
b
P72818A
©2023 bPearson bEducation
bLtd. b N:1/1/1/1/1/
, 1. The bhistogram band bits bfrequency bpolygon bbelow bgive binformation babout bthe
bweights, bin bgrams, bof b50 bplums.
b
DO b NOT bWRITE b IN bTHIS
AREA
14
12
10
Frequency bdensity 8
6
4
2
0
60 61 62 63 64 65 66 67 68
b
DO b NOT bWRITE b IN bTHIS
AREA
Weight b(grams)
(a) Show bthat ban bestimate bfor bthe bmean bweight bof bthe b50 bplums bis b63.72 bgrams.
(2)
(b) Calculate ban bestimate bfor bthe bstandard bdeviation bof bthe b50 bplums.
(2)
Later bit bwas bdiscovered bthat bthe bscales bused bto bweigh bthe bplums bwere
broken. bEach bplum bactually bweighs b5 bgrams bless bthan boriginally bthought.
b
(c) State bthe beffect bthis bwill bhave bon bthe bestimate bof bthe bstandard bdeviation bin bpart
b(b). bGive ba breason bfor byour banswer.
(1)
b
DO b NOT bWRITE b IN bTHIS
AREA
2
■■■■
Candidate b surname Other bnames
Centre bNumber Candidate b Number
Pearson Edexcel Level 3 GCE
b b b b
Thursday 25 May 2023 b b b
Afternoon Paper
breferenc
e
8MA0/21
Mathematics
Advanced Subsidiary b
PAPER 21: Statistics
b b
You bmust bhave: Total bMarks
Mathematical bFormulae band bStatistical bTables b(Green),
bcalculator
Candidates bmay buse bany bcalculator ballowed bby bPearson bregulations. bCalculators
bmust bnot bhave bthe bfacility bfor bsymbolic balgebra bmanipulation, bdifferentiation band
bintegration, bor bhave bretrievable bmathematical bformulae bstored bin bthem.
Instructions
•• Use bblack bink bor bball-point
•
If bpencil bis bused bfor bdiagrams/sketches/graphs bit bmust bbe bdark b(HB bor bB).
Fill bin bthe bboxes bat bthe btop bof bthis bpage bwith byour
bpen.
•
centre bnumber band b candidate
number.
Answer ball bquestions band bensure bthat byour banswers bto bparts bof bquestions bare bclearly
•
b
bname,
bAnswer b the
labelled. b questions
b – bthere in bbthe
bmaybbbe moreb spaces
bspace bthan byou bneed.
• You bshould bshow bsufficient bworking bto bmake byour bmethods bclear.
•
Answers bwithout bworking bmay bnot bgain bfull bcredit.
b provided
Values bfrom bstatistical btables bshould bbe bquoted bin bfull. bIf ba bcalculator bis bused
•
binstead bof b tables bthe bvalue bshould bbe bgiven bto ban bequivalent bdegree bof
baccuracy.
Inexact banswers bshould bbe bgiven bto bthree bsignificant bfigures bunless botherwise bstated.
Information
•• A bbooklet b‘Mathematical bFormulae band bStatistical bTables’ bis
The btotal bmark bfor bthis bpart bof bthe bexamination bis b30. bThere bare b5
• bThe
questions.
bmarks bfor
bprovided.
bquestion.
beach
– buse bthisbas
question
ba bguide
bare
bas bbto
shown
bhowbbin
much btimebtobspend bon beach
Advice
bbrackets
• Read beach bquestion bcarefully bbefore byou bstart bto banswer bit.
•• Try bto banswer bevery
Check byour banswers bif byou bhave btime bat bthe bend. Turn bover
question.
b
P72818A
©2023 bPearson bEducation
bLtd. b N:1/1/1/1/1/
, 1. The bhistogram band bits bfrequency bpolygon bbelow bgive binformation babout bthe
bweights, bin bgrams, bof b50 bplums.
b
DO b NOT bWRITE b IN bTHIS
AREA
14
12
10
Frequency bdensity 8
6
4
2
0
60 61 62 63 64 65 66 67 68
b
DO b NOT bWRITE b IN bTHIS
AREA
Weight b(grams)
(a) Show bthat ban bestimate bfor bthe bmean bweight bof bthe b50 bplums bis b63.72 bgrams.
(2)
(b) Calculate ban bestimate bfor bthe bstandard bdeviation bof bthe b50 bplums.
(2)
Later bit bwas bdiscovered bthat bthe bscales bused bto bweigh bthe bplums bwere
broken. bEach bplum bactually bweighs b5 bgrams bless bthan boriginally bthought.
b
(c) State bthe beffect bthis bwill bhave bon bthe bestimate bof bthe bstandard bdeviation bin bpart
b(b). bGive ba breason bfor byour banswer.
(1)
b
DO b NOT bWRITE b IN bTHIS
AREA
2
■■■■
