Single-variable data: diagrams and histograms

Single-variable data: diagrams and histograms Quiz

Spec 2.1 · Edexcel A-Level Maths: Quiz

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  1. 1. A histogram bar has frequency density 3.2 and class width 5. What is the frequency?

    • A. 0.64
    • B. 8.2
    • C. 16
    • D. 1.6

  2. 2. On which values are the points of a cumulative frequency diagram plotted?

    • A. Class midpoints
    • B. Upper class boundaries
    • C. Lower class boundaries
    • D. Class widths

  3. 3. A data set has Q1=12Q_1=12 and Q3=20Q_3=20. By the 1.5×1.5\timesIQR rule, what is the upper limit above which values are outliers?

    • A. 32
    • B. 24
    • C. 30
    • D. 28

  4. 4. A frequency polygon is drawn by joining points plotted at which position in each class?

    • A. The lower boundary
    • B. The upper boundary
    • C. The midpoint
    • D. The modal value

  5. 5. A histogram has total area 1. A bar has width 4 and height 0.05. What is the probability for that class?

    • A. 0.2
    • B. 0.05
    • C. 0.45
    • D. 0.0125

Quiz