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Dot Plots, Box Plots, Histograms
Contributed by: Miles

The title of the graph is misleading.

Which statement best explains why a

person reading the graph might get

an incorrect idea about the differences

in the number of hours computers are

used by students in the grades shown?

The grade intervals do not show 

    how much time college students use

    computers.

The vertical scale should show

    minutes used instead of hours.

The intervals on the vertical scale 

    are not consistent.

The box-and-whisker plot shows the average class sizes in 15 schools.

Which statement about the class sizes must be true?

The range of the class sizes is 8.

The largest class size is 31.

About one-half of the classes range in size from 23 to 31.

The median class size is 23.

Compact Discs Owned by Classmates
Use the Histogram shown below to answer the question. 

Number of CDs Owned

How many classmates own

more than 300 CDs?

16
2
22
6
Compact Discs Owned by Classmates
Use the Histogram shown below to answer the question. 

Number of CDs Owned

How many classmates were 
surveyed?
25
22
10
15

Ms. Henslee made the following box-and-whisker graph of the quiz

grades in her Math class.

70
What is the median of the data?
77
86

96

Ms. Henslee made the following box-and-whisker graph of the quiz

grades in her Math class.

96
What is the range of the data?
58
38

16

Ms. Henslee made the following box-and-whisker graph of the quiz

grades in her Math class.

70
What is the lower quartile, Q1?
58
38

22

Ms. Henslee made the following box-and-whisker graph of the quiz

grades in her Math class.

58
What is the upper quartile, Q3?
70
77

86

Ms. Henslee made the following box-and-whisker graph of the quiz

grades in her Math class.

86
What is the Interquartile Range (IQR)?
77
70

16

A

Luke’s math scores for this grading period are listed:  

84,  86,  83,  78,  92,  87,  92,  90,  88,  86


      Which line plot correctly shows his scores? 

B
C
D

   30 packages

   100 packages

   70 packages

   120 packages

How many packages were shipped that weigh less than 7 pounds?

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