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Objective
Construct and interpret line plots
Vocabulary
Line plot
Shows the frequency of data on a number line
Vocabulary
Cluster
A group of data close together
Vocabulary
Outlier
Data that is separated from the rest of the data
Vocabulary
Range
The difference between the greatest and least
numbers in the data set
Example 1 Make a Line Plot
Example 2 Use a Line Plot to Analyze Data
Example 3 Use a Line Plot to Analyze Data
PRESIDENTS The table below shows the ages of the U.S.
presidents at the time of their inaugurations. Make a line
plot of the data.
Age at Inauguration
Determine the
smallest number
Determine the
largest number
Range is
42 to 69
57
51
54
56
61
61
49
49
55
52
57
64
50
51
69
57
50
47
54
64
58
48
55
51
46
57
65
55
60
54
61
52
54
62
68
54
56
42
43
46
51
55
56
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Age at Inauguration
57
51
54
56
61
61
49
49
55
52
57
64
50
51
69
Determine a scale
and interval for the
number line
57
50
47
54
64
58
48
55
51
46
57
65
55
60
54
To include both
numbers begin at
40 and end at 70
61
52
54
62
68
54
56
42
43
46
51
55
56
Range is
42 to 69
EASY NUMBERS
Note: Only numbered by 5’s but put
the hash marks equal distance for all
1/3
Age at Inauguration
Plot data by putting
an x above the
number for each
piece of data
×
57
51
54
56
61
61
49
49
55
52
57
64
50
51
69
57
50
47
54
64
58
48
55
51
46
57
65
55
60
54
61
52
54
62
68
54
56
42
43
46
51
55
56
×
×
×
×
××
×
×
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Age at Inauguration
×
57
51
54
56
61
61
49
49
55
52
57
64
50
51
69
57
50
47
54
64
58
48
55
51
46
57
65
55
60
54
61
52
54
62
68
54
56
42
43
46
51
55
56
×
×
××
××
×× ××
×
×
×
××
××
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Age at Inauguration
×
57
51
54
56
61
61
49
49
55
52
57
64
50
51
69
57
50
47
54
64
58
48
55
51
46
57
65
55
60
54
61
52
54
62
68
54
56
42
43
46
51
55
56
×
×
××
××
××
××
×
×
×
×
×
×
×
×
×
×
××
××××
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Age at Inauguration
××
57
51
54
56
61
61
49
49
55
52
57
64
50
51
69
57
50
47
54
64
58
48
55
51
46
57
65
55
60
54
61
52
54
62
68
54
56
42
43
46
51
55
56
×
×
×
×
×
× ××× ×× ×
×
×
×
×
×
×
×
×
×
×
××
××××
××
××
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××
Age at Inauguration
××
57
51
54
56
61
61
49
49
55
52
57
64
50
51
69
57
50
47
54
64
58
48
55
51
46
57
65
55
60
54
61
52
54
62
68
54
56
42
43
46
51
55
56
×
××
×
×××××
××
×
×
×
×
×
×
×
×
×
×
×
×
×
×
××
××××
×
×
×× ×
1/3
××
×
××
Answer:
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STUDY TIME The table below shows the number of
minutes each student in a math class spent studying
the night before the last math exam. Make a line plot
of the data.
Minutes Studying
36
70
60
38
42
48
58
45
60
55
42
60
35
32
55
50
Answer:
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CLIMATE The line plot shows the number of inches of
precipitation that fell in several cities west of the
Mississippi River during a recent year. What is the
range of the data?
Range = Greatest - Least
Range = 50 - 5
Range = 45
Write formula for range
Find greatest number
Find least number
Subtract
Answer: The range 45 inches.
2/3
AGE The line plot below shows the ages of students
in an introductory computer course at the local
community college. What is the range of the data?
Answer: Range = 26 years
2/3
Identify clusters, gaps, and outliers if any exist in the
line plot below and explain what they mean.
Answer: There are data clusters between 11 and
13 inches and between 16 and 18 inches.
Gap is from 18 to 23 and 27 to 32
Outliers could be 5 and 50 but they are not
necessarily separated from other data
3/3
*
Identify clusters, gaps, and outliers if any exist in the
line plot below and explain what they mean.
Answer: The cluster is from 18 to 30.
There is a gap between 30 years and 44 years.
The outlier is 44
3/3
Lesson 2:3
Assignment
Line Plots
5 - 21 All