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Box & Whisker Plot Notes Absent 1/31-2/1. Vocabulary for box and whisker plots. min. Lower Median Upper max. Quartile Quartile Inter Quartile. Example 1.

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Box whisker plot notes absent 1 31 2 1

Box & Whisker PlotNotesAbsent1/31-2/1


Vocabulary for box and whisker plots

Vocabulary for box and whisker plots

min. Lower Median Upper max.

Quartile Quartile

Inter Quartile


Example 1

Example 1

Mr. Halls test scores:

77, 99, 100, 67, 90, 55, 86,

78, 72, 48, 27, 88, 24, 95

60, 63, 82, 94, 82

24, 27, 78, 55, 60, 63, 67, 72, 77, 78, 82,

82, 86, 88, 90, 94, 95, 99, 100

20 30 40 50 60 70 80 90 100

24 60 78 90 100

Range: 76%

Inter Quartile range: 30%

  • Step 1: Put test scores least to greatest.

  • Step 2: Make a number line with test scores.

  • Step 3: Put a dot at the min. and max. test score.

  • Step 4: Make a line at the median test score.

  • Step 5: Make a line at the lower and upper quartiles. Take the median of the lower half and upper half of test scores.

  • Step 6: make a box with the lines.


Questions from example 1

Questions from example 1

  • What percent of students scored higher than 78%?

    50% scored higher

    2.What percent of students scored higher than 60%?

    75% scored higher

    3.What percent of students scored lower than 60%?

    25% scored lower

    4.What percent of students scored higher than 90%?

    25% scored higher

    5.What percent of students scored lower than 90%?

    75% scored lower

    6.What percent of students scored 24% or higher?

    100% scored higher


Example 2

Example 2

  • Mrs. Hall’s test scores:

    47, 65, 50, 56, 68, 51, 36, 63, 45, 53, 59

    36, 45, 47, 50, 51, 53, 56, 59, 63, 65, 68

    30 40 50 60 70

    36 47 53 63 68

    Range: 32 %

    Inter Quartile range: 16%

  • Step 1: Put test scores least to greatest.

  • Step 2: Make a number line with test scores.

  • Step 3: Put a dot at the min. and max. test score.

  • Step 4: Make a line at the median test score.

  • Step 5: Make a line at the lower and upper quartiles. Take the median of the lower half and upper half of test scores.

  • Step 6: make a box with the lines.


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