Question 1 (Multiple Choice Worth 1 points)
[06.02]
The box plots show student grades on the most recent exam compared to overall grades in the class:
Which of the following best describes the information about the medians?
The exam median is only 1-2 points higher than the class median.
B. The exam median is much higher than the class median.
The additional scores in the second quartile for the exam data make the median higher.
The narrower range for the exam data causes the median to be higher.
Question 2 (Multiple Choice Worth 1 points)
[06.02]
The box plots show male and female grades in a U.S. history class:
Which of the following best describes the information about the interquartile ranges?
The female interquartile range cannot be known because only three quartiles are showing.
The male interquartile range cannot be known because the fourth quartile is missing.
The male interquartile range is larger due to the size of the first quartile.
D. The two interquartile ranges are about the same size.
Question 3 (Multiple Choice Worth 1 points)
[06.02]
The box plots show attendance at a local movie theater and high school basketball games:
Which of the following best describes how to measure the spread of the data?
The IQR is a better measure of spread for movies than it is for basketball games.
The standard deviation is a better measure of spread for movies than it is for basketball games.
The IQR is the best measurement of spread for games and movies.
D. The standard deviation is the best measurement of spread for games and movies.
Question 4 (Multiple Choice Worth 1 points)
[06.02]
The box plots show the average daily temperatures in January and December for a U.S. city:
What can you tell about the means for these two months?
The mean for December is higher than January's mean.
It is almost certain that January's mean is higher.
There is no way of telling what the means are.
D. The narrow IQR for January causes its mean to be lower.
Question 5 (Multiple Choice Worth 1 points)
[06.02]
The table shows data from a survey about the number of times families eat at restaurants during a week. The families are either from Rome, Italy or New York, New York:
σ
High
Low
Q1
Q3
IQR
Median
Mean
Rome
18
1
3
7
4
6.5
6.4
4.3
New York
14
1
4.5
8.5
4
5.5
6.1
3.2
Which of the choices below best describes how to measure the center of this data?
Both centers are best described with the mean.
Both centers are best described with the median.
The Rome data center is best described by the mean. The New York data center is best described by the median.
D. The Rome data center is best described by the median. The New York data center is best described by the mean.
Question 6 (Multiple Choice Worth 1 points)
[06.02]
The table shows data from a survey about the number of times families travel by car or taxi during an average week. The families are either from a rural town (population under 5,000) or a large city
(population over 1 million):
Rural Town
City
0
2
1
5
2
6
8
7
9
9
15
14
20
15
25
20
35
25
36
25
40
30
Which of the choices below best describes how to measure the center of this data?
A. Both centers are best described with the mean.
Both centers are best described with the median.
The country data center is best described by the mean. The city data center is best described by the median.
The country data center is best described by the median. The city data center is best described by the mean.
Question 7 (Multiple Choice Worth 1 points)
[06.02]
The table shows data from a survey about the amount of time high school students spent reading and the amount of time spent watching videos each week (without reading):
Reading
Video
4
4
4
5
5
6
5
8
5
9
6
10
7
11
8
12
8
14
9
25
Which response best describes outliers in these data sets?
Neither data set has suspected outliers.
The range of data is too small to identify outliers.
C. Video has a suspected outlier in the 25-hour value.
The 25-hour value for video does not pass the outlier test of 1.5 • (IQR) + Q3.
Question 8 (Multiple Choice Worth 1 points)
[06.02]
Male and female high school students reported how many hours they worked each week in summer jobs. The data is represented in the following box plots:
Identify any values of data that might affect the statistical measures of spread and center.
The zero hour mark on both plots prevents the graphs from being balanced.
The median is near the center of the IQR for both males and females.
There is not enough evidence to see any effects on spread or center.
D . The males have a suspected significant high outlier.
Question 9 (Multiple Choice Worth 1 points)
[06.02]
The table shows data for a class's mid-term and final exams:
Mid-Term
Final
100
98
100
95
100
93
95
91
95
88
92
82
92
78
88
78
85
65
75
60
Which data set has the largest IQR?
Mid-term exams
B. Final exams
They have the same IQR.
There is not enough information.
Question 10 (Multiple Choice Worth 1 points)
[06.02]
The table shows data from a survey about the amount of time students spend doing homework each week. The students were either in college or in high school:
σ
High
Low
Q1
Q3
IQR
Median
Mean
College
50
5
7.5
15
7.5
11
13.8
6.4
High School
16
0
9.5
14.5
5
13
10.7
5.3
Which of the choices below best describes how to measure the spread of this data?
(Hint: Use the minimum and maximum values to check for outliers.)
Both spreads are best described with the IQR.
Both spreads are best described with the standard deviation.
C. The college spread is best described by the IQR. The high school spread is best described by the standard deviation.
The college spread is best described by the standard deviation. The high school spread is best described by the IQR.