Box-and-Whisker Plots


Construct a box‑and‑whisker plot to match a line plots, and construct a line plot to match a box‑and‑whisker plots. Manipulate the line plot and examine how the box‑and‑whisker plot changes. Then manipulate the box‑and‑whisker plot and examine how the line plot changes.

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Assessment Questions (5):

  1. Find the value of Q1 for these values:

    2, 4, 6, 8, 10, 12, 14.
  2. Find the quartiles for these data values:

    5, 7, 7, 8, 10, 11, 12, 15, 17.
  3. Compare the quantity in column A with the quantity in column B. Choose the best answer.

    73, 56, 88, 94, 100, 87, 92, 100, 78

    column a contains q2 of the above data and column b contains the median of the above data
  4. The interquartile range (IQR) is defined as the difference between the first and third quartiles (Q3 − Q1). What feature of the box-and-whisker plot does the IQR describe?
  5. Suppose you received these grades on your last five quizzes: 16, 17, 18, 19, and 20. If you get 20's on the next three quizzes, which of the following would change?

    I. Q1       II. Q2        III. Q3       IV. minimum       V. maximum

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