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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 7 - Mathematics
10.1 Making a Box-and-Whisker Plot

Example:
Use the given data to make a box-and-whisker plot.
23 16 51 23 56 22 63 51 22 15 19 42 44 50 38 31 47

Solution:

  1. Order the data and find the smallest value, first quartile, median, third quartile, and largest value
    15, 16, 19, 22, 22, 23, 23, 31, 38, 42, 44, 47, 50, 51, 51, 56, 63

    • smallest value: 15
    • first quartile: (22+22)/2 = 22
    • median: 38
    • third quartile: (50+51)/2 = 50.5
    • largest value: 63
  2. Draw a number line and plot a point about each value from step 1
  3. Draw the box and whiskers

Directions: Draw a box-and-whisker plot for the following:
  • Math test scores for the class: 80, 75, 90, 95, 65, 65, 80, 85, 70, 100
  • Minimum value: 65, first quartile: 70, second quartile (median): 80, third quartile: 90, maximum:100
  • The following set of numbers are the amount of pencils fifteen different students own. (The data is already arranged from least to greatest.) 18 27 34 52 54 59 61 68 78 82 85 87 91 93 100
  • 4.3, 5.1, 3.9, 4.5, 4.4, 4.9, 5.0, 4.7, 4.1, 4.6, 4.4, 4.3, 4.8, 4.4, 4.2, 4.5, 4.4

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