Name:
Section:
Homework 9 Solutions
Chapter 13
Due: 5/24
1. George has an average bowling score of 180 and bowls in an amateur league where the
average for all bowlers is 150 and the standard deviatio
Lab5:InClass
1. Sketchlinegraphsofaseriesofobservationsovertimehavingeachofthesecharacteristics.
Markyourtimeaxisinyears.
a. Astrongdownwardtrend,butnoseasonalvariation.
b. Seasonalvariationeachyear,b
CHAPTER 13B
Normal Distributions
EXAMPLE 13.3
Heights of adults, ages 18-24
Men
mean: 70.0 inches
standard deviation: 2.8 inches
So
68% of men are between 67.2 and 72.8 inches
95% of men are between
CHAPTER 14
Describing Relationships:
Scatterplots & Correlation
RELATIONSHIPS
So far, weve only examined the distribution of a
single variable. We can look at some sort of
graphical display or numeric
CHAPTER 17
Thinking About Chance
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 land with 3 show
CHAPTER 22A
What is a Test of Significance?
CONFIDENCE INTERVALS
On November 6th, 2008, the Kentucky Kernel
reported:
In spring 2004, 28% of UK students smoked. In
fall 2007, a survey of 469 students
CHAPTER 22B
What is a Test of Significance?
TESTING HYPOTHESES
State the null and alternative hypotheses in the
following scenarios:
A Gallup Poll found that 40% of American adults
say they attended
Name:
Section:
Homework 1 Solutions
Chapter 1
Due: 5/11
1. An opinion poll contacts 1000 randomly selected adults from the U.S. and asks them, Please
tell if you have bought a lottery ticket in the la
Solutions for Suggested Problems from Chapter 15
1. The least-squares regression line for predicting SAT math score from percentage taking is
SAT score = (-97.0*proportion taking) + 575.3
a. When desc
Name:
Section:
Homework 10 Solutions
Chapter 14
Due: 5/25
1. For a biology project, you measure the length (centimeters) and weight (grams) of 12
crickets.
a. Explain why you expect the correlation be
Name:
Section:
Homework 8 Solutions
Chapter 12
Due: 5/23
1. Yolanda would like to go to a prestigious graduate school of the arts. The following data represent
the dance audition scores of Yolandas gr
Name:
Section:
Homework 7 Solutions
Chapter 11
Due: 5/20
1.
The following table gives the highway miles per gallon (MPG) for 23 cars.
Model
Acura 3.5RL
Bentley Arnage
Cadillac CTS
Chevy Malibu
Dodge S
CHAPTER 12B
Displaying Distributions with Numbers
DESCRIBING DISTRIBUTIONS
Describing the center and spread of a distribution
using words is inadequate. Instead, we want to
describe these topics using
CHAPTER 12A
Describing Distributions with Numbers
DESCRIBING DISTRIBUTIONS
As we discussed in the previous chapter, we
always describe a distribution with some sort of
graphical display (e.g. histogra
Lab6:InClass
Governmentregulationsrequireautomakerstogivethecityandhighwaygasmileageforeach
modelofcar.Calculatethefivenumbersummaryforthefollowing:
a) Thefollowingdatasetgivesthehighwaymileages(miles
Lab8:InClass
1. Thefollowingstatementscontainamistake.Explainwhatiswrong.
a. Wefoundacorrelationofr=1.09betweentheheightandweightofAmerican
adults.
b. Thecorrelationbetweenthegenderofworkersandtheirin
STA 200-010
STATISTICS A FORCE ON HUMAN JUDGMENT
SUMMER I 2011
(Tentative, Tentative, Tentative, )
INSTRUCTOR
Dustin Lueker
Office: 859D POT
Email: [email protected]
Website: http:/web.as.uky.edu/
CHAPTER 1
Where Do Data Come From?
TALKING ABOUT DATA
Individuals are the objects described by a set of
data.
People
Animals
things
A variable is any characteristic of an individual.
Variables can t
CHAPTER 4
Sample Surveys in the Real World
HOW SAMPLING CAN GO WRONG
Statistical theory is a nice thing to talk about,
but since humans are involved, chances are good
that our samples will not always
CHAPTER 5
Experiments, Good and Bad
THOUGHT QUESTION 1
In research to determine the relationship
between two conditions (activities, traits, etc.),
one of them is often defined as the explanatory
(ind
CHAPTER 6
Experiments in the Real World
EQUAL TREATMENT FOR ALL SUBJECTS
The underlying assumption of randomized
comparative experiments is that all subjects are
handled equally in every respect excep
CHAPTER 10
Graphs, Good and Bad
DISPLAYING DATA
The first part of this course dealt with the
production of data, through random sampling
and randomized comparative experiments.
This particular unit f
CHAPTER 11
Displaying Distributions with Graphs
HISTOGRAMS
Pie charts and bar graphs display the
distribution of categorical variables.
How can we present the distribution of a
quantitative variable?
Name:
Section:
Homework 6 Solutions
Chapter 10
Due: 5/20
1. A survey of 1000 college freshmen in 2001 asked what field they planned to study. The
results: 126 said arts and humanities, 166 said busine
Name:
Section:
Solutions for Suggested Problems from Chapter 6
1. Exercise 6.4 from book (page 115).
The ratings were not double-blind because the researcher knew which subjects
received the capsaicin
Name:
Section:
Homework 5 Solutions
Chapter 5
Due: 5/16
1. Although the law doesnt require it, we decide to subject Dr. Moores Indiana Extract to a
clinical trial. We hope to show that the extract red
BN 1.27
child mortality vs co2
12
10
Child mortality (0-5 year
old dying per 1,000
born)
8
6
4
2
0
0
50
100
150
200
250
1.
2. there is no association between the co2 emission and mortality child rate,
BN 1.32
1. Yes because as the DTP coverage increases the autism line drastically
increases
Exhibit 2
1. no there is no clear correlation between heart failure and whole grain
because the study does no