4.2 Presentation of data

4.2 Presentation of data Quiz

IB Maths: Analysis and Approaches HL: Quiz

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5 questions, one answer each

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  1. 1. There are 60 values. Cumulative frequencies are 12 below 20 and 36 below 30. Estimate the median by interpolation.

    • A. 25
    • B. 27.5
    • C. 30
    • D. 22.5

  2. 2. A five-number summary is 10, 18, 22, 26, 44. Which statement is true?

    • A. 44 is an outlier
    • B. The IQR is 34
    • C. The data are negatively skewed
    • D. There are no outliers

  3. 3. Which set of classes is correct for continuous data?

    • A. 00–99, 1010–1919
    • B. 0<x<100 < x < 10, 10<x<2010 < x < 20
    • C. 0≤x<100 \le x < 10, 10≤x<2010 \le x < 20
    • D. 0≤x≤100 \le x \le 10, 10≤x≤2010 \le x \le 20

  4. 4. Box plot P: median 50, IQR 10. Box plot Q: median 60, IQR 25. Which is a valid comparison?

    • A. P has higher values and is more spread out
    • B. Q has higher values typically and is more spread out
    • C. Q has higher values typically and is less spread out
    • D. They have the same spread

  5. 5. For a data set, the median is 40, Q1=38Q_1 = 38 and Q3=55Q_3 = 55. What shape is the distribution?

    • A. Symmetric
    • B. Negatively skewed
    • C. Positively skewed
    • D. Normal

Quiz