Page 360 - Algebra 1
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L E S S O N Displaying Data in a Box-and-Whisker Plot 54
Warm Up
1. Vocabulary A(n) is a data value that is much greater or much
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less than the other values in the data set.
2. Skateboards sell for $39.99, $32.99, $65.98, $38.99, $28.99, $31.00, $41.00.
(48)
3. Space Exploration The data set shows the number of days each expedition
(48)
Find the mean price of the skateboards. (Round the answer to the nearest dollar.)
crew was assigned to the International Space Station from 2000 to 2004. 140.98, 167.28, 128.86, 195.82, 184.93, 161.05, 184.93, 194.77, 185.66, 192.79
a. Find the median of the data set. b. Find the range of the data set.
Evaluate. 4.(8.2+3.7+9.1+3.8)
__ (11) 4
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5. - รท(- ) (11) 8 4
New Concepts
A box-and-whisker plot displays data that are divided into four groups.
A line inside the box shows the median, the ends of the box show the quartiles, and the ends of the whiskers show the minimum and maximum values.
In 15 hockey games, 1, 1, 1, 3, 4, 4, 4, 5, 6, 7, 7, 8, 8, 9, 9 goals were scored. The number of goals scored can be displayed in a box-and-whisker plot.
Hockey Goals
Math Language
The median is the middle number in a set of numbers that are arranged from least to greatest.
First Quartile
Minimum Median
Third Quartile
Maximum
Online Connection www.SaxonMathResources.com
0 1 2 3 4 5 6 7 8 9 10
Half of the games had between 3 to 8 goals per game. One-fourth of the games had between 1 and 3 goals per game. The median number of goals scored was 5.
The greatest number of goals scored in one game was 9.
The quartiles divide the data into fourths. The first quartile is the median of the lower half of the data, and the third quartile is the median of the upper half of the data.
Lesson 54 345
