Chapter 5
Experiments, Good and Bad
Chapter 5
1
Thought Question 1
In studies to determine the relationship between two
conditions (activities, traits, etc.), one of them is often
defined as the expla
Chapter 7
Data Ethics
Chapter 7
1
Thought Question 1
Many new treatments for rapidly lethal diseases
offer very little or no benefit to patients. Thus,
clinical trials to study the effectiveness of th
Chapter 8
Measuring
Chapter 8
1
Thought Question 1
A local health club is doing a survey to see
if there is a relationship between strength
and fitness. They want to measure the
strength and fitness o
Chapter 9
Do the Numbers Make Sense?
Chapter 9
1
Thought Question 1
In 1994, according to the Department of
Labor, the median salary for government
workers was $29,528, while the median
salary for pri
Chapter 10
Graphs, Good and Bad
Chapter 10
1
Thought Question 1
What is confusing or misleading about the
following graph?
21
20
19
18
17
Interest Rate
16
15
House hold
B ank
Ce ntral
B ank
Chapter 10
Chapter 11
Displaying Distributions with
Graphs
Chapter 11
1
Thought Question 1
Two internet providers are being compared
in terms of how long it takes to download
large media files. Over a two month
Chapter 12
Describing Distributions with
Numbers
Chapter 12
1
Thought Question 1
Suppose you are helping to prepare a
meal for the homeless at a local shelter,
and you are told that on average about
2
Chapter 13
Normal Distributions
Chapter 13
1
Thought Question 1
Birth weights of babies born in the United
States follow, at least approximately, a
bell-shaped curve. What does that mean?
Thought Ques
Chapter 14
Describing Relationships:
Scatterplots and Correlation
Chapter 14
1
Thought Question 1
For all cars manufactured in the U.S., there
is a positive correlation between the size
of the engine
Chapter 15
Describing Relationships:
Regression, Prediction, and
Causation
Chapter 15
1
Thought Question 1
From a long-term study on several families,
researchers constructed a scatterplot of the
chol
Chapter 16
The Consumer Price Index and
Government Statistics
Chapter 16
1
Thought Question 1
Bob drives a Honda Accord LX. When he
bought it in 1986, it cost about $11,500. A
comparable new Honda Acc
Chapter 17
Thinking About Chance
Chapter 17
1
Thought Question 1
Here are two very different probability questions:
If you roll a 6-sided die and do it fairly, what is
the probability that it will la
Chapter 18
Probability Models
Chapter 18
1
Probability Rules
Four simple, logical rules which apply to
how probabilities relate to each other
and to real events.
x Review the rules at the beginning of
Chapter 19
Simulation
Chapter 19
1
Thought Question 1
(a) When flipping a fair coin numerous times, each
outcome is said to be independent of the other
outcomes. What does this mean?
(b) When flipping
Chapter 20
The House Edge:
Expected Values
Chapter 20
1
Thought Question 1
Suppose that a sorority pledge class is
selling raffle tickets to raise money. The
grand prize is a $200 gift certificate to
Lecture 1:
Where do data come from?
S100 Statistical Literacy
Fall 2012
Introductory Comments
Statistics are powerful, persuasive and can
therefore be misleading when used in
ignorantly, lazily, or d
Lecture 2:
Samples, Good and Bad
S100 Statistical Literacy
Fall 2009
Sampling
In sampling, we want to choose as representative a
subset of the population as possible.
When representative, the answer
Chapter 6
Experiments in the Real World
Chapter 6
1
Thought Question 1
Suppose you are interested in determining if drinking a
glass of red wine each day helps prevent heartburn. You
recruit 40 adults