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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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14 questions

SA-IAL-S1-MD1-0011 markL1 FoundationCalculatorEvaluating models

A model predicts

25

heads in

50

tosses of a coin. An experiment gives

27

heads. The most sensible conclusion is that

Salam Academy Original Practice · Proposed mark scheme

SA-IAL-S1-MD1-0021 markL1 FoundationCalculatorModelling cycle

In the modelling cycle, what comes immediately after "use the model to make predictions"?

Salam Academy Original Practice · Proposed mark scheme

SA-IAL-S1-MD-Q011 markL1 FoundationCalculatorModelling cycle

A statistical model is

Salam Academy Original Practice · Proposed mark scheme

SA-IAL-S1-MD-Q021 markL1 FoundationCalculatorModelling cycle

Which is the correct order of the modelling cycle?

Salam Academy Original Practice · Proposed mark scheme

SA-IAL-S1-MD-Q031 markL1 FoundationCalculatorEvaluating models

An advantage of using a statistical model is that it

Salam Academy Original Practice · Proposed mark scheme

SA-IAL-S1-MD-Q041 markL1 FoundationCalculatorEvaluating models

A disadvantage of a statistical model is that

Salam Academy Original Practice · Proposed mark scheme

SA-IAL-S1-MD-Q061 markL1 FoundationCalculatorModelling cycle

In the modelling cycle, data are collected in order to

Salam Academy Original Practice · Proposed mark scheme

SA-IAL-S1-MD-Q081 markL1 FoundationCalculatorEvaluating models

Which is NOT a reason for using a model?

Salam Academy Original Practice · Proposed mark scheme

SA-IAL-S1-MD-Q101 markL1 FoundationCalculatorModelling cycle

After a model has been refined, the next step is to

Salam Academy Original Practice · Proposed mark scheme

SA-IAL-S1-MD-Q111 markL1 FoundationCalculatorEvaluating models

Making a model simpler usually makes it

Salam Academy Original Practice · Proposed mark scheme

SA-IAL-S1-MD-Q051 markL2 StandardCalculatorEvaluating models

A model predicts that 30 out of 120 seeds will fail to grow. In an experiment, 58 fail. The most sensible next step is to

Salam Academy Original Practice · Proposed mark scheme

SA-IAL-S1-MD-Q071 markL2 StandardCalculatorEvaluating models

A fair die is modelled with P(each score) = 1/6. Which observation would most suggest the model needs refining?

Salam Academy Original Practice · Proposed mark scheme

SA-IAL-S1-MD-Q091 markL2 StandardCalculatorEvaluating models

The heights of adult men are modelled by a normal distribution. A limitation of this model is that

Salam Academy Original Practice · Proposed mark scheme

SA-IAL-S1-MD-Q121 markL2 StandardCalculatorEvaluating models

A model of daily rainfall is based on one month of data. Why might its predictions be poor for the whole year?

Salam Academy Original Practice · Proposed mark scheme