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Practise

Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

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12 questions

SA-ST-SA-0011 markL1 FoundationNon-calculatorMethods
For a systematic sample of 20 from a list of 400, what is the interval kk?

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Salam Academy Original Practice · Proposed mark scheme
SA-ST-SA-0031 markL1 FoundationNon-calculatorKey terms
A list of every member of the population from which a sample is drawn is called
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Salam Academy Original Practice · Proposed mark scheme
SA-ST-SA-G012 marksL1 FoundationNon-calculatorMethods
A school has 360 boys and 240 girls. How many boys should be in a stratified sample of 50?

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Salam Academy Original Practice · Proposed mark scheme
SA-ST-SA-Q011 markL1 FoundationNon-calculatorEvaluating
Which is an advantage of a census over a sample?
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Salam Academy Original Practice · Proposed mark scheme
SA-ST-SA-X012 marksL1 FoundationNon-calculatorMethods
A school has 200200 boys and 300300 girls. How many boys should be in a stratified sample of 4040?

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Salam Academy Original Practice · Proposed mark scheme
SA-ST-SA-X021 markL1 FoundationNon-calculatorMethods
A systematic sample of 3030 is taken from a list of 600600. Find the interval kk.

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Salam Academy Original Practice · Proposed mark scheme
SA-ST-SA-X031 markL1 FoundationNon-calculatorKey terms
Asking the first 2020 people who walk past is
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Salam Academy Original Practice · Proposed mark scheme
SA-ST-SA-X051 markL1 FoundationNon-calculatorKey terms
A census
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Salam Academy Original Practice · Proposed mark scheme
SA-ST-SA-0022 marksL2 StandardNon-calculatorMethods
A company has 120 managers, 300 office staff and 780 factory workers. How many factory workers belong in a stratified sample of 80?

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Salam Academy Original Practice · Proposed mark scheme
SA-ST-SA-0041 markL2 StandardNon-calculatorEvaluating
An interviewer must question 20 men and 20 women in a shopping centre, choosing whoever is willing. This is
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Salam Academy Original Practice · Proposed mark scheme
SA-ST-SA-X041 markL2 StandardNon-calculatorEvaluating
A disadvantage of quota sampling is that
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Salam Academy Original Practice · Proposed mark scheme
SA-ST-SA-X062 marksL2 StandardNon-calculatorMethods
Year 7 has 150150 pupils, Year 8 has 120120 and Year 9 has 130130. How many Year 8 pupils belong in a stratified sample of 4040?

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Salam Academy Original Practice · Proposed mark scheme