Statistical modelling

Statistical modelling Quiz

Spec 1.1 · Edexcel International A Level Maths: Quiz

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5 questions, one answer each

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  1. 1. In the modelling cycle, the step after using the model to make predictions is

    • A. refining the model immediately
    • B. reporting the results
    • C. comparing predictions with real data
    • D. ignoring the assumptions

  2. 2. A fair die is rolled 90 times. The expected number of sixes is

    • A. 1515
    • B. 3030
    • C. 66
    • D. 4545

  3. 3. Which is an assumption in modelling coin tosses with P(head)=12P(\text{head})=\frac12?

    • A. Heads follows tails
    • B. There will be 10 heads in 20 tosses
    • C. The tosses are independent
    • D. Heads is more likely

  4. 4. A model predicts 25 successes and 27 are observed in a large experiment. This suggests the model is

    • A. reasonable
    • B. proved correct
    • C. definitely unsuitable
    • D. irrelevant

  5. 5. Which change would give more reliable evidence about whether a model is suitable?

    • A. Fewer trials
    • B. Ignoring the data
    • C. Changing the model before checking
    • D. More trials

Quiz