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Section 6.11.H: Homework

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    216531
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    Section 6.11: Quartiles - Homework Exercises


    (Section 6.11) - Homework Exercise #1

    The weight (in pounds) of 20 random adults are listed below:

    131, 138, 145, 149, 154, 156, 163, 166, 168, 170, 174, 175, 179, 181, 186, 194, 199, 201, 211, 222

    Find the quartiles of the data set.

    Answer

    Q1 = 155,  Q2 = 172, &  Q3 = 190

    (Section 6.11) - Homework Exercise #2

    Test scores of 40 students are given below:

    78, 52, 96, 63, 89, 38, 72, 96, 55, 85, 63, 32, 87, 97, 68, 46, 91, 56, 75, 88,
    62, 80, 73, 97, 58, 93, 63, 100, 71, 82, 65, 88, 77, 96, 72, 89, 76, 84, 78, 95

    Find the quartiles of the data set.

    Answer

    Q1 = 63,  Q2 = 77.5, &  Q3 = 89

    (Section 6.11) - Homework Exercise #3

    Thirty-five numbers from 1 through 100 were randomly assigned by a random number generator and listed below:

    76, 23, 88, 51, 9, 67, 32, 19, 62, 45, 7, 79, 54, 91, 38, 73, 2, 85,
    59, 16, 93, 66, 28, 80, 50, 11, 76, 62, 98, 17, 71, 46, 82, 57, 37

    Find the quartiles of the data set.

    Answer

    Q1 = 28,  Q2 = 57, &  Q3 = 76

    (Section 6.11) - Homework Exercise #4

    The weekly salaries (in dollars) of fifteen government workers are given below:

    887, 770, 820, 958, 1,234, 835, 1,089, 979, 829, 1,043, 861, 911, 855, 1,121, 934

    Find the quartiles of the data set.

    Answer

    Q1 = $835,  Q2 = $911, &  Q3 = $1,043

    (Section 6.11) - Homework Exercise #5

    The annual incomes (in thousands of dollars) of a sample of local households are:

    22, 28, 31, 34, 35, 38, 42, 45, 47, 50, 50, 52, 55, 58, 62, 66, 70, 85

    Find the quartiles of the data set.

    Answer

    Q1 = 35,  Q2 = 48.5, &  Q3 = 58

    (Section 6.11) - Homework Exercise #6

    The commute times (in minutes) for employees at a company are:

    40, 32, 12, 20, 30, 35, 38, 45, 22, 60, 55, 50, 15, 25, 27, 18

    Find the quartiles of the data set.

    Answer

    Q1 = 21,  Q2 = 31, &  Q3 = 42.5

    (Section 6.11) - Homework Exercise #7

    The following data represent the number of hours students spent studying in the library during midterms week.

    2, 3, 4, 4, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 24, 26, 28, 30

    Find the quartiles of the data set.

    Answer

    Q1 = 7,  Q2 = 11, &  Q3 = 18.5

    (Section 6.11) - Homework Exercise #8

    A university surveyed commuting students and recorded their one‑way commute times (in minutes)

    5, 7, 8, 10, 12, 13, 15, 17, 18, 20, 22, 23, 25, 27, 28, 30, 32, 33, 35, 37, 38, 40, 42, 43, 45, 47, 48,
    50, 52, 53, 55, 57, 60, 62, 65, 67, 68, 70, 72, 75, 78, 80, 85, 90, 95, 100, 105, 110, 115, 120, 130

    Find the quartiles of the data set.

    Answer

    Q1 = 25,  Q2 = 47, &  Q3 = 70



    This page titled Section 6.11.H: Homework is shared under a not declared license and was authored, remixed, and/or curated by Timothy Cooley.

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