Transcript Active Learning Questions

Active Learning Lecture Slides
For use with Classroom Response Systems
Chapter 6:
Displaying and Describing Quantitative Data
Business Statistics
First Edition
by Sharpe, De Veaux, Velleman
Copyright © 2010 Pearson Education, Inc.
Slide 3- 1
You should use a histogram to display
categorical data.
A. True
B. False
Copyright © 2010 Pearson Education, Inc.
Slide 6- 2
You should use a histogram to display
categorical data.
A. True
B. False
Copyright © 2010 Pearson Education, Inc.
Slide 6- 3
We might choose to use a stem-and-leaf display
rather than a boxplot because it …
I. reveals the shape of a distribution.
II. is better for large data sets.
III. displays the actual data values.
A. I only
B. II only
C. III only
D. I, II, and III
Copyright © 2010 Pearson Education, Inc.
Slide 6- 4
We might choose to use a stem-and-leaf display
rather than a boxplot because it …
I. reveals the shape of a distribution.
II. is better for large data sets.
III. displays the actual data values.
A. I only
B. II only
C. III only
D. I, II, and III
Copyright © 2010 Pearson Education, Inc.
Slide 6- 5
When we describe the shape of a distribution
we typically do so in terms of its
A. modes
B. symmetry
C. outliers
D. all of the above
Copyright © 2010 Pearson Education, Inc.
Slide 6- 6
When we describe the shape of a distribution
we typically do so in terms of its
A. modes
B. symmetry
C. outliers
D. all of the above
Copyright © 2010 Pearson Education, Inc.
Slide 6- 7
Based on the histogram, what can we say about the
shape of the distribution?
A. It is skewed left.
B. It is skewed right.
C. It is symmetric.
D. It is bimodal.
Copyright © 2010 Pearson Education, Inc.
Slide 6- 8
Based on the histogram, what can we say about the
shape of the distribution?
A. It is skewed left.
B. It is skewed right.
C. It is symmetric.
D. It is bimodal.
Copyright © 2010 Pearson Education, Inc.
Slide 6- 9
Two sections of a class took the same quiz.
Section A had 15 students who had a mean
score of 80, and Section B had 20 students
who had a mean score of 90. Overall, what
was the mean score for all students on the
quiz?
A. 84.3
B. 85.7
C. 85.0
D. It cannot be determined.
Copyright © 2010 Pearson Education, Inc.
Slide 6- 10
Two sections of a class took the same quiz.
Section A had 15 students who had a mean
score of 80, and Section B had 20 students
who had a mean score of 90. Overall, what
was the mean score for all students on the
quiz?
A. 84.3
B. 85.7
C. 85.0
D. It cannot be determined.
Copyright © 2010 Pearson Education, Inc.
Slide 6- 11
Whenever we compare more than two
groups, a boxplot does a better job than a
histogram.
A. True
B. False
Copyright © 2010 Pearson Education, Inc.
Slide 6- 12
Whenever we compare more than two
groups, a boxplot does a better job than a
histogram.
A. True
B. False
Copyright © 2010 Pearson Education, Inc.
Slide 6- 13
Which of the following is not included in a
five-number summary?
A. median
B. first quartile
C. mean
D. maximum
Copyright © 2010 Pearson Education, Inc.
Slide 6- 14
Which of the following is not included in a
five-number summary?
A. median
B. first quartile
C. mean
D. maximum
Copyright © 2010 Pearson Education, Inc.
Slide 6- 15
The SPCA has kept data records for the
past 20 years. If they want to show the
trend in the number of dogs they have
housed, what kind of plot should they
make?
A. Boxplot
B. Time series plot
C. Bar graph
D. Histogram
Copyright © 2010 Pearson Education, Inc.
Slide 6- 16
The SPCA has kept data records for the
past 20 years. If they want to show the
trend in the number of dogs they have
housed, what kind of plot should they
make?
A. Boxplot
B. Time series plot
C. Bar graph
D. Histogram
Copyright © 2010 Pearson Education, Inc.
Slide 6- 17
Which of the following are measures of the
center of a distribution (circle all that apply)?
A. Mean
B. Variance
C. Standard deviation
D. Median
Copyright © 2010 Pearson Education, Inc.
Slide 6- 18
Which of the following are measures of the
center of a distribution (circle all that apply)?
A. Mean
B. Variance
C. Standard deviation
D. Median
Copyright © 2010 Pearson Education, Inc.
Slide 6- 19
Which of the following are measures of the
spread of a distribution (circle all that apply)?
A. Mean
B. Variance
C. Standard deviation
D. Median
Copyright © 2010 Pearson Education, Inc.
Slide 6- 20
Which of the following are measures of the
spread of a distribution (circle all that apply)?
A. Mean
B. Variance
C. Standard deviation
D. Median
Copyright © 2010 Pearson Education, Inc.
Slide 6- 21
If you cannot find a reason for an outlier or
remove it, you should use the mean and
IQR to summarize the center and spread.
A. True
B. False
Copyright © 2010 Pearson Education, Inc.
Slide 6- 22
If you cannot find a reason for an outlier or
remove it, you should use the mean and
IQR to summarize the center and spread.
A. True
B. False
Copyright © 2010 Pearson Education, Inc.
Slide 6- 23
Variables with a distribution that is skewed to
the right often benefit from re-expression by
(circle all that apply):
A. squaring the data values.
B. logarithms.
C. square roots.
D. none of these.
Copyright © 2010 Pearson Education, Inc.
Slide 6- 24
Variables with a distribution that is skewed to
the right often benefit from re-expression by
(circle all that apply):
A. squaring the data values.
B. logarithms.
C. square roots.
D. none of these.
Copyright © 2010 Pearson Education, Inc.
Slide 6- 25