#32
Example 1: Misleading Bar Graphs
Why is this bar graph misleading?
Example 2: Misleading Bar Graphs
What might people believe from the
misleading graph?
1
__
2
1
__
2
Example 3
Dollars
Money Raised
600
580
570
560
550
540
530
4th graders 5th graders 6th graders
Why is this bar graph misleading?
Example 4
Dollars
Money Raised
590
580
570
560
550
540
530
4th graders 5th graders 6th graders
What might people believe from the
misleading graph?
Example 5: Misleading Line Graphs
Why are these graphs misleading?
Example 6: Misleading Line Graphs
What might people believe from these
misleading graphs?
Example 7: Misleading Line Graphs
Why is this line graph misleading?
September
90
80
70
60
50
40
30
20
10
0
1
2
Week
3
4
Temperature (°F)
Temperature (°F)
Example 8
November
70
60
50
40
30
20
10
0
1
Why are these graphs misleading?
2
3
Week
4
Price of stock ($)
Example 10
Stock prices
80
Corp. C
Corp. D
70
60
50
0
1985 1990 1995 2000
Year
Why is this line graph misleading?
VOCABULARY
A stem-and-leaf plot shows data
arranged by place value. You can use a
stem-and-leaf plot when you want to
display data in an organized way that
allows you to see each value.
Example 11: Creating Stem-and-Leaf Plots
Use the data in the table to make a stem-andleaf plot.
75
88
Test Scores
86
83
91
84
99
79
94
86
Helpful Hint
To write 42 in a stem-and-leaf plot, write
each digit in a separate column.
4 2
Stem
Leaf
Example 12
Use the data in the table to make a stem-andleaf plot.
72
84
Test Scores
88
64
79
83
76
74
61
67
Example 13: Reading Stem-and-Leaf Plots
Find the least value, greatest value, mean,
median, mode, and range of the data.
The least stem and least leaf
Stems
give the least value, 40.
4
The greatest stem and
5
greatest leaf give the
6
greatest value, 94.
7
8
9
Leaves
00157
1124
333599
044
367
14
Key: 4 0 means 40