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Five students received the following test scores: 7, 11, 5, 6, and 11. Calculate the mode,
median, mean, and range of this distribution of scores. Which measure of central
tendency would change the most if an additional test score of 2 were included in the
distribution?
The table lists the scores of eight students on a test to measure anxiety, as well as the
typical number of cigarettes each person smokes daily. Scores on the anxiety test can
range anywhere from a low of 0 (indicating very low anxiety) to a high of 30 (indicating
very high anxiety).
Anxiety Cigarettes
Student Test Score Smoked Daily
1 8 11
2 9 3
3 15 11
4 14 16
5 21 26
6 12 10
7 22 24
8 17 18
Construct a scatterplot to represent the correlation between smoking and anxiety.
Describe the direction of the correlation and give two possible explanations for it.
At Michigan State University, 32 students are enrolled in class A, 48 students are
enrolled in class B, and 16 students are enrolled in class C. For which of these three
classes is there the greatest probability that more than 75 percent of the students have
blond hair? Explain your answer and indicate why this explanation has relevance for
generalizing appropriately from samples to the larger populations in which you are
interested.
Page 1
me and enhances
2This comprehensive
learning by combining
package saves
textbook
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exercises
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and detailed
textbook
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Answer Key
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2.
3.
Page 2
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Whether
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exercises
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oreveryt
mastering
Whether you?
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1. The average price for different brands of toothpaste could be visually displayed
in a(n)
correlation coefficient.
scatterplot.
standard deviation.
bar graph.
2. When you read a bar graph, it is most important for you to
mentally transform the data into a normal curve.
identify the value of the standard deviation.
note the range and size of the scale values.
remember that correlation facilitates prediction.
3. The most frequently occurring score in a distribution of scores is the
mode.
median.
standard deviation.
mean.
4. In a group of five individuals, two report annual incomes of $10,000, and the
other three report incomes of $14,000, $15,000, and $31,000, respectively. The
mode of this group's distribution of annual incomes is
$10,000.
$15,000.
$16,000.
$31,000.
5. The mean of a distribution of scores is the
most frequently occurring score.
arithmetic average of all the scores.
least frequently occurring score.
score exceeded by 50 percent of all the scores.
6. Which measure of central tendency is used to calculate the average of your
school grades?
standard deviation
median
mean
mode
Page 1
me and enhances
4This comprehensive
learning by combining
package saves
textbook
timecontent
and enhances
with practice
learning
exercises
by combining
and detailed
textbook
solutions.
contentWhether
with practice
you?reexercises
preparing
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fordetailed
exams, solutions.
teaching
Page
aWhether
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you?re
masterin
prep
tice exercises
1learning
of 968This
and detailed
by combining
comprehensive
solutions.
textbook
Whether
package
content
you?re
saves
withtime
preparing
practice
and exercises
enhances
for exams,
and
learning
teaching
detailed
byacombining
solutions.
course, ortextbook
Whether
mastering
content
you?re
advanced
preparing
with accounting,
practice
for exams,
exercises
this package
teaching
and detailed
provides
a course,
solutions.
everyt
or mastering
Whethea
and enhances
1This comprehensive
learning by combining
packagetextbook
saves time
content
andwith
enhances
practice
learning
exercises
by combining
and detailed
textbook
solutions.
content
Whether
with practice
you?re preparing
exercisesfor
andexams,
detailed
teaching
solutions.
Page a 1/course,
Stuvia)
Whetheror maste
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,hndpractice
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oflearning
968This
and
by
comprehensive
detailed
combiningsolutions.
textbook
package
Whether
content
savesyou?re
with
timepractice
and
preparing
enhances
exercises
for exams,
learning
and detailed
teaching
by combining
solutions.
a course,
textbook
Whether
or mastering
content
you?re
advanced
with
preparing
practice
accounting,
for
exercises
exams,this
and
teaching
package
detailed
a course,
provides
solutions.
oreveryt
mastering
Whether you?
adva
Five students received the following test scores: 7, 11, 5, 6, and 11. Calculate the mode,
median, mean, and range of this distribution of scores. Which measure of central
tendency would change the most if an additional test score of 2 were included in the
distribution?
The table lists the scores of eight students on a test to measure anxiety, as well as the
typical number of cigarettes each person smokes daily. Scores on the anxiety test can
range anywhere from a low of 0 (indicating very low anxiety) to a high of 30 (indicating
very high anxiety).
Anxiety Cigarettes
Student Test Score Smoked Daily
1 8 11
2 9 3
3 15 11
4 14 16
5 21 26
6 12 10
7 22 24
8 17 18
Construct a scatterplot to represent the correlation between smoking and anxiety.
Describe the direction of the correlation and give two possible explanations for it.
At Michigan State University, 32 students are enrolled in class A, 48 students are
enrolled in class B, and 16 students are enrolled in class C. For which of these three
classes is there the greatest probability that more than 75 percent of the students have
blond hair? Explain your answer and indicate why this explanation has relevance for
generalizing appropriately from samples to the larger populations in which you are
interested.
Page 1
me and enhances
2This comprehensive
learning by combining
package saves
textbook
timecontent
and enhances
with practice
learning
exercises
by combining
and detailed
textbook
solutions.
contentWhether
with practice
you?reexercises
preparing
and
fordetailed
exams, solutions.
teaching
Page
aWhether
course,
2/ Stuvia)
or
you?re
masterin
prep
,hndpractice
enhances3exercises
oflearning
968This
and
by
comprehensive
detailed
combiningsolutions.
textbook
package
Whether
content
savesyou?re
with
timepractice
and
preparing
enhances
exercises
for exams,
learning
and detailed
teaching
by combining
solutions.
a course,
textbook
Whether
or mastering
content
you?re
advanced
with
preparing
practice
accounting,
for
exercises
exams,this
and
teaching
package
detailed
a course,
provides
solutions.
oreveryt
mastering
Whether you?
adva
Answer Key
1.
2.
3.
Page 2
me and enhances
3This comprehensive
learning by combining
package saves
textbook
timecontent
and enhances
with practice
learning
exercises
by combining
and detailed
textbook
solutions.
contentWhether
with practice
you?reexercises
preparing
and
fordetailed
exams, solutions.
teaching
Page
aWhether
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3/ Stuvia)
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you?re
masterin
prep
,hndpractice
enhances4exercises
oflearning
968This
and
by
comprehensive
detailed
combiningsolutions.
textbook
package
Whether
content
savesyou?re
with
timepractice
and
preparing
enhances
exercises
for exams,
learning
and detailed
teaching
by combining
solutions.
a course,
textbook
Whether
or mastering
content
you?re
advanced
with
preparing
practice
accounting,
for
exercises
exams,this
and
teaching
package
detailed
a course,
provides
solutions.
oreveryt
mastering
Whether you?
adva
1. The average price for different brands of toothpaste could be visually displayed
in a(n)
correlation coefficient.
scatterplot.
standard deviation.
bar graph.
2. When you read a bar graph, it is most important for you to
mentally transform the data into a normal curve.
identify the value of the standard deviation.
note the range and size of the scale values.
remember that correlation facilitates prediction.
3. The most frequently occurring score in a distribution of scores is the
mode.
median.
standard deviation.
mean.
4. In a group of five individuals, two report annual incomes of $10,000, and the
other three report incomes of $14,000, $15,000, and $31,000, respectively. The
mode of this group's distribution of annual incomes is
$10,000.
$15,000.
$16,000.
$31,000.
5. The mean of a distribution of scores is the
most frequently occurring score.
arithmetic average of all the scores.
least frequently occurring score.
score exceeded by 50 percent of all the scores.
6. Which measure of central tendency is used to calculate the average of your
school grades?
standard deviation
median
mean
mode
Page 1
me and enhances
4This comprehensive
learning by combining
package saves
textbook
timecontent
and enhances
with practice
learning
exercises
by combining
and detailed
textbook
solutions.
contentWhether
with practice
you?reexercises
preparing
and
fordetailed
exams, solutions.
teaching
Page
aWhether
course,
4/ Stuvia)
or
you?re
masterin
prep
