Lesson 6 Contents

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Lesson 6 Contents
Example 1 Draw a Box-and-Whisker Plot Example
2 Interpret Data Example 3 Compare Data
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Example 6-1a
POPULATION Use the data in the table at the
right to draw a box-and-whisker plot.
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Example 6-1a
Step 1 Draw a number line that includes the least
and greatest number in the data.
Step 2 Mark the extremes, the median, and the
upper and lower quartile above the number line.
Since the data have an outlier, mark the
greatest value that is not an outlier.
Step 3 Draw the box and whiskers.
Answer
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Example 6-1b
POPULATION Use the data in the table below to
draw a box-and-whisker plot.
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Example 6-1b
Answer
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Example 6-2a
WATERFALLS What does the length of the
box-and-whisker plot below tell you about the
data?
Answer Data in the second quartile are more
spread out than the data in the third quartile.
You can see that data in the fourth quartile are
the most spread out because the whisker is longer
than other parts of the plot.
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Example 6-2b
EXERCISE What does the length of the
box-and-whisker plot below tell you about the
data?
Answer Data in the second quartile are less
spread out than the data in the third quartile.
You can see that data in the third quartile are
the most spread out because the box is longer
than other parts of the plot.
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Example 6-3a
MULTIPLE-CHOICE TEST ITEM Use the
box-and-whisker plots below to determine which
statement is not true.
A August temperatures were greater than those in
April.B The temperatures were more spread out
in April than in August.C Most April
temperatures were above 25?C.D Most August
temperatures were above 28?C.
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Example 6-3a
Read the Test Item You need to study the
box-and-whisker plot.
Solve the Test Item Most of the April
temperatures were not above 25?C.
The answer is C.
Check to make sure A, B, and D are true.
Answer C
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Example 6-3b
MULTIPLE-CHOICE TEST ITEM Use the
box-and-whisker plots below to determine which
statement is not true.
A July temperatures were mostly greater than
those in May.B The temperatures were more
spread out in July than in May.C Most May
temperatures were above 50?F.D Most July
temperatures were above 70?F.
Answer B
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End of Lesson 6