7th Grade Math

(Marvins-Underground-K-12) #1

Test PracticeT


Lesson 2B Measures of Variation 509


  1. Which box-and-whisker plot represents
    the data set 14, 18, 21, 24, and 29?
    A.


12 14 16 18 20 22 24 26 28 30 32 34
B.

12 14 16 18 20 22 24 26 28 30 32 34
C.

12 14 16 18 20 22 24 26 28 30 32 34
D.

12 14 16 18 20 22 24 26 28 30 32 34


  1. SHORT RESPONSE Construct a
    box-and-whisker plot with the data
    set 35, 42, 44, 47, and 54.
    19. Which of the following statements is
    NOT true concerning the box-and-
    whisker plot below?


44 48 52 56 60 64 68 72 76 80
F. The value 74 is an extreme value.
G. Half of the data are above 62.
H. Half of the data are in the interval
62–74.
I. There are more data values in the
interval 52–62 than there are in the
interval 62–66.


  1. The box-and-whisker plot shows
    distances traveled by vacationers.
    Half of the drivers traveled farther
    than what distance?


50 56 62 68 74 80 86 92 98 104 110
A. 68 miles
B. 75 miles
C. 86 miles
D. 99 miles

For each set of data, find the range, median, upper and lower quartile,
and interquartile range. (Lesson 2A)


  1. number of instruments in a band: 3, 5, 11, 7, 8, 4, 15, 7

  2. number of animals in a pet store: 25, 54, 32, 46, 65, 24, 39


Find the mean, median, and mode for each data set. Round to the nearest
tenth if necessary. (Lesson 1B)


  1. number of As on a test: 4, 7, 5, 2, 6, 10, 2, 9

  2. miles run: 2, 5.1, 3, 4.8, 1, 3, 1.2, 3.4, 2.3

  3. number of tracks on a CD: 10, 11, 13, 12, 10, 11, 15, 10, 12

  4. daily number of boats in a harbor: 93, 84, 80, 91, 94, 90, 78, 93, 80


498_509_C09_L2_895130.indd 509 1/11/10 9:35 AM

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