Sociology 549, Winter 2006 Instructor: Paul von Hippel Your name_
Assignment #1 (30 points) due Th 10/5 at the beginning of lab
Write your answers directly on the assignment, unless instructed otherwise. Problems 1) (1 point) Do SSDS exercise 3 on page 27
Sociology 549, Winter 2006 Instructor: Paul von Hippel Your name_
Pre-midterm extra problems due Th 10/26 at the beginning of lab Note. These problems will not be collected or graded, but you should treat them just like any graded assignment. They will be
Sociology 549, Winter 2006 Instructor: Paul von Hippel Your name_
Pre-midterm extra problems due Th 10/26 at the beginning of lab Note. These problems will not be collected or graded, but you should treat them just like any graded assignment. They will be
Lab 0
Logging in and Using Excel
Sociology 549
Paul von Hippel
Where you are
Sociology Instruction Lab (SIL), 70 Derby Hall
used for computer courses
Logging in to the SIL
Turn on computer
Enter your user name
If your OSU email is [email protected]
Assignment
After this lecture, start Assignment #1.
Its in the course binder.
Paul von Hippel, OSU Sociology 549
1
Lecture 1
Data sets:
Cases and variables
Paul von Hippel, OSU Sociology 549
2
Overview
Data set
Cases
Variables
Interval (quantitative
Lecture 2
Frequency tables
Paul von Hippel, OSU Sociology 549
1
Overview
Frequency table
Summary of a single variable
Shows how common (frequent) different values
are
Slightly different for nominal vs.
ordinal/interval variables
Paul von Hippel, OSU S
Sociology 549,
Lecture 3
Graphs
by Paul von Hippel
Common graphs for frequency
distributions
Pie chart
Line chart (frequency polygon)
Bar chart
Histogram
Other common graphs
Time series
Statistical map
Common distortions
False perspective
e.g., tiltin
Assignment
After this lecture, start Assignment #2.
Its in the course binder.
1
Sociology 549,
Lecture 4
What is typical? Measures of center
by Paul von Hippel
Sociology 549
2
What is typical?
Measures of center
Mean
Trimmed mean
Median
Mode
Sensitivi
Lecture 5 How much variety is there? Measures of variation
Sociology 549 Paul von Hippel
1
Sensitive (to extreme values)
standard deviation (s) variance (s2) range
Measures of variation
Robust
interquartile range (IQR)
Standard deviation
is basis fo
Assignment
After this lecture, start Assignment #3.
Its in the course binder.
Chapter 11 1
Lecture 6
Who are we talking about?
Populations and samples
Chapter 11 2
Overview
Defining a population
Taking a simple random sample
How similar is the sample
Lecture 7
How certain are we?
Sampling and the normal distribution
Chapter 11 1
Lecture 6: Summary
If we take a simple random sample
from a well-defined population
we expect
that the sample mean
is probably close to the population mean
By close we m
Assignment
After this lecture,
start the Pre-Midterm Extra Problems.
Its in the course binder.
Lecture 9
Sampling distribution
and confidence intervals
for proportions
Overview
We know about
sampling distribution
standard error
confidence interval
for
Assignment
Afterthislecture,startAssignment#4.
Its in the course binder.
1
Comparedtowhat?
Lecture10
Hypothesistestforamean
2
Overview
Whatisahypothesis?
Howdoyoucompareahypothesistoyour
data
using confidence intervals
using sampling distributions
3
Lecture 11 Compared to what?
Hypothesis test for a proportion
1
Overview
You've learned hypothesis tests
for a mean
Today you'll learn hypothesis tests
for a proportion
Connection
A proportion is the mean of a dummy variable
2
1.
What are the hypoth
Sociology 549
Paul von Hippel
Lecture14
Comparedtowhat?
Differencesamongseveralmeans
1
Overview
Youcanalreadycalculateandinterpret
hypothesis tests
for a single population mean Y
or for the difference between k=2 population means
( Y1 Y2)
Todayyoulll
Assignment
Afterthislecture,startthePreFinalExtra
Problem.
Its in the course binder.
1
Sociology 549
Paul von Hippel
Lecture15
Comparisonandcontrol:
Differencesamongseveral
proportions
2
Overview
Wecanalreadydoahypothesistest
for equality among severa
Paul von Hippel Sociology 549, Winter 2006
Your name_
Pre-final extra problem due T 11/21 at the beginning of lab Note. This problem will not be collected or graded, but you should treat it just like any graded assignment. It will be discussed in lab, and
Sociology 549, Paul von Hippel, Winter 2005 Your name_
Midterm questions (43 points) Time allotted: 90 minutes. Be concise! 1. (8 points) The following graph is linked to the White House web site.
a. (1 point) Despite its appearance, I would not call this
Sociology 549, Paul von Hippel, Winter 2005 Your name_
Midterm questions (43 points) Time allotted: 90 minutes. Be concise! General grading guideline: Dont be fussy about rounding error. 1. (8 points) The following graph is linked to the White House web s
Sociology 549, Winter 2006 Instructor: Paul von Hippel Your name_
Assignment #2 (37 points+1 extra) due Th 10/12 at the beginning of lab
General guidelines 1. Get used to working from the formula sheet in your binder. Youll use it for the exams. 2. Show a
Sociology 549, Winter 2006 Instructor: Paul von Hippel Your name_
Assignment #3 (20 points) due T 10/24 at the beginning of lab General guidelines 1. Get used to using the formula sheet in your course binder. 2. Give all your answers in sentences that wou
Sociology 549, Winter 2006 Paul von Hippel
Your name_
Assignment #4 (23 points possible) Due Th 11/9 at the beginning of your lab session 1. (4 points) Do SSDS problems 3a-b on page 499 (3rd edition) or pages 437-8 (4th edition), and check your answers in
Sociology 549, Winter 2006 Paul von Hippel Your name_ Assignment #5 (39 points possible) Due T 11/20 at the beginning of lab 1) (14 points) On average, children in private schools have higher test scores than children in public schools. The meaning of thi
Student 1 2 .
Fill in the blue cells If you skip an assignment, fill in 0% If you did the math review, fill in 1; otherwise, fill in 0. Results are in yellow Assignments Asst. Avg. Midterm 1 2 3 4 5 75% 46% 40% 70% 75% 61% 53% 70% 75% 75% 80% 80% 76% 80%
Sociology 549 Paul von Hippel
Final Review Lecture
1
Exam is comprehensive
Emphasizes second half of course Earlier topics do come back
though I won't review them today
Today's review
themes nuts and bolts
2
Themes
3
Themes: Inferential statistics
Po
Paul von Hippel Sociology 549 Practice for final These problems are intended to help students prepare for the final exam. They require skills similar to those needed for the final. However, you should not expect an exact correspondence between the problem
FORMULAS
Sociology 549, Paul von Hippel
Descriptive statistics
Measures of center
1. mode 2. median 3. trimmed mean Y or, for a frequency table, Y = fY 4. mean Y = N N For a dummy variable the mean is p, the proportion of observations with a value of Y=1.
Agenda
Buy materials Go over syllabus Preview course Take photographs
Paul von Hippel, OSU Sociology 549
1
Lecture 0
Introduction
Paul von Hippel, OSU Sociology 549
2
Statistical questions
1. 2. 3. 4. 5. What is typical? How much variety is there? Who ex
How certain are we?
Lecture 8 Confidence intervals for the mean
Sociology 549, Paul von Hippel 1
Review of central limit theorem (CLT) Turning the CLT around to get confidence intervals, e.g.
Confidence interval for a mean:
We are 95% confident that ne