3/27/2017
Big Ideas Math::Assignment Preview
ig Idea Math ©2014 Green
Chapter 9 Practice Te t
xerci e 1
Display the data in the interactive dot plot below.
Ages
10
13
14
10
11
11
10
13
12
13
10
12
13
12
14
10
11
12
13
14
Ages
xerci e 2
Find the mean without the outlier.
Ages: 15, 34, 38, 42, 43, 36, 40, 35, 36, 38
Without the outlier, the mean is .
Correct answers:
38
xerci e 3
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Big Ideas Math::Assignment Preview
Find the median of the data.
5, 8, 4, 6, 8
The median is .
Correct answers:
6
xerci e 4
Find the median of the data.
10, 9, 12, 7, 5, 7
The median is .
Correct answers:
8
xerci e 5
Find the mode of the data.
1, 2, 1, 3, 3, 4, 1
The mode is .
Correct answers:
1
xerci e 6
Which measure best represents the data?
18, 18, 29, 35, 43, 46, 63, 120
Mean
Median
Mode
xerci e 7
Consider the data below.
2, 2, 2, 3, 5, 6, 8, 30
The mean decreases by
1
when the outlier is removed.
Correct answers:
1
xerci e 8
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Big Ideas Math::Assignment Preview
Consider the data below.
7, 4, 4, 3, 6, 3, 4, 4, 3, 2
Each value increases by 5. Determine whether each statement is true or false.
The mean increases by 5.
1
.
2
The median stays the same.
The mode increases by 5.
3
True
False
Correct answers:
1
True
2
False
3
True
xerci e 9
Find the range of the data.
6, 8, 14, 4, 26, 24, 2, 4, 18, 9
The range is .
Correct answers:
24
xerci e 10
Find the interquartile range of the data.
12, 14, 8, 20, 10, 12, 13, 18
The interquartile range is .
Correct answers:
5
xerci e 11
Describe the outlier boundaries for the data set.
16, 18, 19, 16, 20, 18, 24, 22
Any value less than
1
or greater than 2
is an outlier.
Correct answers:
1
2
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Big Ideas Math::Assignment Preview
xerci e 12
Identify any outliers in the data set.
35, 41, 44, 45, 47, 58
35
41
44
45
47
58
xerci e 13
Find the mean absolute deviation of the data.
1, 2, 3, 3, 4, 5, 6, 8
Correct answers:
1.75
xerci e 14
Determine whether the question is a statistical question.
How tall is a sixth grade student?
Yes
No
xerci e 15
The dot plot shows the ages of the students in a quiz contest. How many students were in the contest?
students
Correct answers:
17
xerci e 16
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Big Ideas Math::Assignment Preview
The table shows the numbers of books read by the students in a book club.
Books Read
2
2
2
3
3
6
The mean number of books read is 1
.
Correct answers:
1
xerci e 17
The table shows the daily high temperatures (in degrees Fahrenheit) in two cities for 7 days. Which city had the greater mean daily high temperature?
City A
City B
65
68
70
70
72
71
68
74
75
76
70
71
70
67
City A
City B
xerci e 18
The table shows the lengths of several movies.
Movie Lengths (minutes)
80
96
180
88
100
97
84
92
The outlier is
1
minutes.
Correct answers:
1
xerci e 19
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Big Ideas Math::Assignment Preview
The table shows the favorite colors of students in a class. Find the mode of the data.
Favorite Colors
Red
Green
Red
Blue
Blue
Blue
Green
Orange
Red
Blue
Blue
Yellow
The mode is
1
.
Correct answers:
1
Blue
xerci e 20
The table shows the ages of the members of two groups.
Group A
Group B
10
11
10
10
11
11
10
11
12
12
11
12
13
13
13
13
13
14
14
14
Based on their mean absolute deviations, which group has the greater variation in ages?
Group A
Group B
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