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Mathematics, 09.10.2021 01:00, emaleyhughes21
The table shows all students in each year group of a school.
The headteacher wants to do a survey. She decides to take a stratified sample of 60 students to interview.
Year Group. No. of Students. Sample
Year 7 135 a
Year 8 126 b
Year 9 162 c
Year 10 81 d
Year 11 36 e
Work out the missing values a to e
a= b= c= d= e=
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Answers: 1
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The table shows all students in each year group of a school.
The headteacher wants to do a survey....
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