4.1 Sampling, data quality and outliers

4.1 Sampling, data quality and outliers Quiz

IB Maths: Applications and Interpretation HL: Quiz

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5 questions, one answer each

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  1. 1. Which of these is continuous data?

    • A. Number of siblings
    • B. Mass of a parcel
    • C. Shoe size
    • D. Number of goals scored

  2. 2. An interviewer must question 15 men and 15 women but picks whoever is nearest. Which technique is this?

    • A. Stratified sampling
    • B. Systematic sampling
    • C. Simple random sampling
    • D. Quota sampling

  3. 3. A systematic sample of 25 is taken from a list of 500 names. What is the sampling interval?

    • A. 20
    • B. 25
    • C. 500
    • D. 475

  4. 4. A data set has Q1=20Q_1=20 and Q3=30Q_3=30. Which value is an outlier?

    • A. 8
    • B. 38
    • C. 44
    • D. 46

  5. 5. A school has 150 students in Year 12 and 50 in Year 13. A stratified sample of 40 is taken. How many are from Year 13?

    • A. 10
    • B. 20
    • C. 13
    • D. 30

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