active learning lecture slides - montgomery college
TRANSCRIPT
Active Learning Lecture Slides For use with Classroom Response Systems
Statistics: The Art and Science of Learning
from Data
Copyright © 2013 Pearson Education, Inc.
1.1 A social scientist is interested in studying the
drinking habits of college students. She randomly
picks 1,000 students from the college directory
using an automated computer system. What
aspect of statistics has she just completed?
a) Design
b) Description
c) Inference
Copyright © 2013 Pearson Education, Inc.
1.1 A social scientist is interested in studying the
drinking habits of college students. She randomly
picks 1,000 students from the college directory
using an automated computer system. What
aspect of statistics has she just completed?
a) Design
b) Description
c) Inference
Copyright © 2013 Pearson Education, Inc.
1.2 A social scientist is interested in studying the
drinking habits of college students. She asks
each student how many drinks they had last
Saturday night. She finds the average for 1,000
randomly selected students and creates a
graph to display the results. What aspect of
statistics is described in bold type?
a) Design
b) Description
c) Inference
Copyright © 2013 Pearson Education, Inc.
1.2 A social scientist is interested in studying the
drinking habits of college students. She asks
each student how many drinks they had last
Saturday night. She finds the average for 1,000
randomly selected students and creates a
graph to display the results. What aspect of
statistics is described in bold type?
a) Design
b) Description
c) Inference
Copyright © 2013 Pearson Education, Inc.
1.3 A social scientist is interested in studying the
drinking habits of college students. She asks
1,000 students how many drinks they had last
Saturday night. From this survey, she is able to
conclude that the average amount of alcoholic
beverages consumed by all students in the
university last Saturday night was most likely
between 0.3 and 2.3 drinks. What aspect of
statistics is described in bold type?
a) Design
b) Description
c) Inference
Copyright © 2013 Pearson Education, Inc.
1.3 A social scientist is interested in studying the
drinking habits of college students. She asks
1,000 students how many drinks they had last
Saturday night. From this survey, she is able to
conclude that the average amount of alcoholic
beverages consumed by all students in the
university last Saturday night was most likely
between 0.3 and 2.3 drinks. What aspect of
statistics is described in bold type?
a) Design
b) Description
c) Inference
Copyright © 2013 Pearson Education, Inc.
1.4 The General Social Survey (GSS) asks
questions to a sample of Americans to determine
their opinions about a wide range of topics every
other year. In 2006 the GSS survey found that
67% of those sampled were in favor of the death
penalty for those convicted of murder. What
aspect of statistics is this?
a) Design
b) Description
c) Inference
Copyright © 2013 Pearson Education, Inc.
1.4 The General Social Survey (GSS) asks
questions to a sample of Americans to determine
their opinions about a wide range of topics every
other year. In 2006 the GSS survey found that
67% of those sampled were in favor of the death
penalty for those convicted of murder. What
aspect of statistics is this?
a) Design
b) Description
c) Inference
Copyright © 2013 Pearson Education, Inc.
1.5 The General Social Survey asks questions to
a sample of Americans to determine their
opinions about a wide range of topics every other
year. Using data from the 2006 survey and
statistical methods it can be deduced that the
percentage of all Americans that favor the death
penalty for those convicted of murder is most
likely between 65.19% and 68.70%. What aspect
of statistics is this?
a) Design
b) Description
c) Inference
Copyright © 2013 Pearson Education, Inc.
1.5 The General Social Survey asks questions to
a sample of Americans to determine their
opinions about a wide range of topics every other
year. Using data from the 2006 survey and
statistical methods it can be deduced that the
percentage of all Americans that favor the death
penalty for those convicted of murder is most
likely between 65.19% and 68.70%. What aspect
of statistics is this?
a) Design
b) Description
c) Inference
Copyright © 2013 Pearson Education, Inc.
1.6 A social scientist is interested in studying the
drinking habits of college students. She randomly
picks 1,000 students from the University of
Florida phone directory using an automated
computer system. What is the population?
a) The 1,000 students sampled
b) All students at the University of Florida
c) All students in universities across the U.S.
Copyright © 2013 Pearson Education, Inc.
1.6 A social scientist is interested in studying the
drinking habits of college students. She randomly
picks 1,000 students from the University of
Florida phone directory using an automated
computer system. What is the population?
a) The 1,000 students sampled
b) All students at the University of Florida
c) All students in universities across the U.S.
Copyright © 2013 Pearson Education, Inc.
1.7 The General Social Survey (GSS) asks
questions to a sample of Americans to determine
their opinions about a wide range of topics every
other year. In 2006 the GSS survey asked 2,815
participants if they were in favor or opposed to the
death penalty for those convicted of murder. What
is the sample?
a) The 2,815 participants
b) All adults in the United States
c) All adults in the world
Copyright © 2013 Pearson Education, Inc.
1.7 The General Social Survey (GSS) asks
questions to a sample of Americans to determine
their opinions about a wide range of topics every
other year. In 2006 the GSS survey asked 2,815
participants if they were in favor or opposed to the
death penalty for those convicted of murder. What
is the sample?
a) The 2,815 participants
b) All adults in the United States
c) All adults in the world
Copyright © 2013 Pearson Education, Inc.
1.8 In 2006 the GSS survey asked 2,815
participants if they were in favor or opposed to the
death penalty for those convicted of murder and
67% of those surveyed stated that they were in
favor of the death penalty. What is the parameter
and the statistic?
a) Parameter = 67% Statistic = 67%
b) Parameter = 67% Statistic = unknown
c) Parameter = unknown Statistic = 67%
d) Parameter = unknown Statistic = unknown
Copyright © 2013 Pearson Education, Inc.
1.8 In 2006 the GSS survey asked 2,815
participants if they were in favor or opposed to the
death penalty for those convicted of murder and
67% of those surveyed stated that they were in
favor of the death penalty. What is the parameter
and the statistic?
a) Parameter = 67% Statistic = 67%
b) Parameter = 67% Statistic = unknown
c) Parameter = unknown Statistic = 67%
d) Parameter = unknown Statistic = unknown
Copyright © 2013 Pearson Education, Inc.
1.9 Suppose that two researchers both randomly
sampled 400 different students at the University
of Miami and asked the students if they
consumed any alcoholic beverages in the past
week. From their sample, the researchers each
computed the proportion of students that
consumed an alcoholic beverage in the past
week. Are the two proportions from the two
samples the same?
a) Yes, both researchers drew from the same
population.
b) Probably not, samples vary.
Copyright © 2013 Pearson Education, Inc.
1.9 Suppose that two researchers both randomly
sampled 400 different students at the University
of Miami and asked the students if they
consumed any alcoholic beverages in the past
week. From their sample, the researchers each
computed the proportion of students that
consumed an alcoholic beverage in the past
week. Are the two proportions from the two
samples the same?
a) Yes, both researchers drew from the same
population.
b) Probably not, samples vary.
Copyright © 2013 Pearson Education, Inc.
1.10 Scientists are interested in the health of
yellow fin snapper in the Bahamas. In the
Bahamas, twenty yellow fin snapper are captured,
weighed, have a blood sample taken and then are
released. The average weight of the 20 snappers
was 2.5 pounds. What is the population?
a) Twenty yellow fin snapper
b) All yellow fin snapper in the Bahamas
c) All yellow fin snapper in the world
d) 2.5 pounds
e) Unknown
Copyright © 2013 Pearson Education, Inc.
1.10 Scientists are interested in the health of
yellow fin snapper in the Bahamas. In the
Bahamas, twenty yellow fin snapper are captured,
weighed, have a blood sample taken and then are
released. The average weight of the 20 snappers
was 2.5 pounds. What is the population?
a) Twenty yellow fin snapper
b) All yellow fin snapper in the Bahamas
c) All yellow fin snapper in the world
d) 2.5 pounds
e) Unknown
Copyright © 2013 Pearson Education, Inc.
1.11 True or False: If a data set is listed on the
internet it can be trusted.
a) True, if it is posted on the internet it must be a
source of reliable data.
b) False, not all data on the internet is reliable,
check the source of the data.
Copyright © 2013 Pearson Education, Inc.
1.11 True or False: If a data set is listed on the
internet it can be trusted.
a) True, if it is posted on the internet it must be a
source of reliable data.
b) False, not all data on the internet is reliable,
check the source of the data.
Copyright © 2013 Pearson Education, Inc.
1.12 True or False: If a statistic is listed in the
newspaper it can be trusted completely.
a) True, newspapers only print reliable
information.
b) False, not all data in the newspaper comes
from reliable studies.
Copyright © 2013 Pearson Education, Inc.
1.12 True or False: If a statistic is listed in the
newspaper it can be trusted completely.
a) True, newspapers only print reliable
information.
b) False, not all data in the newspaper comes
from reliable studies.
Copyright © 2013 Pearson Education, Inc.
1.13 True or False: The opinion polls that can be
completed on news websites such as cnn.com
are good ways to determine the American public’s
opinions about popular topics.
a) True, it is a well respected news site so the
results of its surveys can be trusted.
b) False, the people who complete these surveys
do not constitute a representative sample of
Americans.
Copyright © 2013 Pearson Education, Inc.
1.13 True or False: The opinion polls that can be
completed on news websites such as cnn.com
are good ways to determine the American public’s
opinions about popular topics.
a) True, it is a well respected news site so the
results of its surveys can be trusted.
b) False, the people who complete these surveys
do not constitute a representative sample of
Americans.
Copyright © 2013 Pearson Education, Inc.
1.14 What is the correct format of a data file?
a) Each row represents a subject in the study and
each column represents a characteristic about
that subject.
b) Each row represents a characteristic about a
subject and each column represents a subject.
Copyright © 2013 Pearson Education, Inc.
1.14 What is the correct format of a data file?
a) Each row represents a subject in the study and
each column represents a characteristic about
that subject.
b) Each row represents a characteristic about a
subject and each column represents a subject.
Copyright © 2013 Pearson Education, Inc.
1.15 Suppose that you took a sample of three people and asked
them how much they spent on lunch and whether they had a
vegetarian lunch or not. Which of the following is the correct way to
create a data file?
a) Jane Jo Juan 10 8 8 y n n
Jane Jo Juan
10 8 8
y n n
Name Amount Spent
on Lunch
Vegetarian or
not
Jane 10 y
Jo 8 n
Juan 8 n
b)
c)
Copyright © 2013 Pearson Education, Inc.
1.15 Suppose that you took a sample of three people and asked
them how much they spent on lunch and whether they had a
vegetarian lunch or not. Which of the following is the correct way to
create a data file?
a) Jane Jo Juan 10 8 8 y n n
Jane Jo Juan
10 8 8
y n n
Name Amount Spent
on Lunch
Vegetarian or
not
Jane 10 y
Jo 8 n
Juan 8 n
b)
c)