Statistics Methods in Education
EdPsych 580
C.J. Anderson
Spring 2007

Last revised: 4/30/2007

Sample exam questions for in class mid-term.

General Course Information.
Announcements. 4/12/2007
Lectures Notes. (4/23/2007)
Homework. 4/25/07
Lab Session.
Handy Programs.
Links to resources on statistics.

General Course Information

Syllabus 2007
Weekly EdPsych 580 Schedule. (2006. Will be up-dated first week of classes)
Course log Spring 2007:

Announcements:

4/12: You do *not* need to do POST HOC tests for homework 8.

4/3: HOMEWORK #7 Extension to THursday April 12!!

2/23: There will be 2 parts to the mid-term exam: An in class part that will be held on Tuesday March 6, which consists of 12 questions similar to the sample questions given above, and a take home part, which consists of 3 computational problems that do not require the use of the computer (i.e, hand calculator needed). The take home will be distributed March 6th after you turn in your answers to the in class exam and is due at the beginning of class on Thursday March 8.

2/15: The homework (#3) is due Tuesday, Feb 20---due to snow and UofI closing.

2/12: I corrected the lectures notes on hypothesis testing for 1 mean (except for the figure on page 35---"reject" should be "retain").

2/5: I will be up-dating lectures notes, so I suggest you wait until a day before lecture to print out notes. If lecture notes have been up-dated, I will indiciate this next to the link to the notes.

Lecture Notes (pdf format):
(I suggest that you print multiple pages per sheet of paper).

Introduction
Graphical displays and descriptive statistics. Some SAS files that produced some of the graphics:
- Using SAS Assist to create graphics
- Using SAS interactive (exploratory) data analysis ... previously known as "SAS Insight".
Introduction to SAS and SAS Analyst
Probability, Probability Distributions, and Expectations. And for fun BirthdayProblem.
Sampling Distributions, the CLT and Estimation.
Hypothesis Testing (part 1). up-dated 2/12/2007.
Hypothesis Testing: differences between means up-dated 2/5/2007
- Ttest.sas (SAS program showing how to do two independent groups and paired t-tests using PROC TTEST).
Chi-Square and F distributions. up-dated 2/8/2007
Correlation. up-dated 2/26/2007
- Fisher's Z transformation and Tests in SAS.
- Fisher's Z and 2 independent populations (and 1 and 2-tail tests in SAS).
Simple Linear Regression. (up-dated 3/12/07)
Multiple Regression. (up-dated 3/27/07)

General Linear Model and 1-Way ANOVA. (up-date 4/2/2007)

Computing intra-class correlation (including using PROC/MIXED and PROC/GLM to do ANOVA)

Multiple Comparisons I. (up-dated 4/12/2007)
Factorial ANOVA. (up-dated 4/23/2007)
Multiple Comparisons for Factorial ANOVA. SAS programs demonstrating some of this
- No interaction
- Interaction

Homework:

Homework #1: (SAS section on lecture notes for handout on SAS/ANALYST)
- Homework Assignment 1 (due Feb 1)
- Data for homework 1 (from National Youth Longitudinal study)
- Answer key for homework 1.
Homework #2:
- Homework Assignment 2. (due Thursday Feb 8).
- Answer key for assignment 2.
Homework #3:
- Homework Assignment 3. (due Thursday Feb 15).
- Description of HSB data. (You need this to know how data are coded)
- hsb-data.sas (SAS program that creates HSB data set)
- votech.sas (SAS program that gets sub-set of data)
- Election data (SAS program that creates election data)
- Answer key for homework 3.
Homework #4:
- Homework Assignment 4 (due Thursday March 1).
- Data for problem 1 (SAS program)
- Data for problem 2 (SAS program)
- High School and Beyond data for problem 3 (SAS program)
- Election data for problem 4 (SAS program)
- Answer Key for homework 4.
Homework #5:
- Homework Assignment 5. (Due March 15)
- Answer Key for homework 5.
Homework #6:
- Homework Assignment 6 (due March 29)
- High School and Beyond data for problem 4
- Answer Key for homework 6. (available)
Homework #7:
- Homework Assignment 7 Note new due date: Thursday April 12
- Manatee data
- Freshman GPA and ACT data
- SENIC data
- Answer key for homework 7. (available)
Homework #8:
- Homework Assignment 8 class="main" target="_blank" (Due Thursday April 19). You do not need to do the post hoc tests.
- SENIC data (no outliers)
- Data for Problem 2.
- High School and Beyond Data (N=600)
  - Description of the High School and Beyond data set
  - SAS program the creates SAS data set.
- Answer key. (available)
Homework #9: (this will be just for practice, i.e., not graded)
- Homework Assignment 9
- Answer to question 1 is on the answer key for homework 8.
- SAS program used to computed answer to question 2. (SAS/IML).
- Answer to question 2.

Computer Lab: Data sets to practice on...

National Youth Longitudinal Study:
- From National Youth Longitudinal study
High School and Beyond Data (N=600)
- Description of the High School and Beyond data set
- SAS program the creates SAS data set.
Lab Session 1 Extra problems on probability.
Lab Session 2 SAS/ANALYST & 1 sample tests, online density calculator, and extra problem.
Lab Session 3 Inferences regarding differences between two means, creating data sets in SAS, and creating new variables.
Lab Session 6 Correlations.
Lab Session 7 Regression (help with homework 7).
Lab Session 8 Multiple regression & 1 factor ANOVA (help with homework 8).
Lab Session 9 How to perform multiple comparisons (which helps with homework 9).

Handy little programs:

CIforP.f: A FORTRAN program that computes large sample confidence intervals for a proportion.
pvalue.f: A FORTRAN program that computes p-values and (bonferroni) critical values for the standard normal, chi-squared, t, and F distributions (and for correlations). pvalue.exe An executable version of pvalue (for PC type computer).
On-Line density/distribution calculator. This is an alterantive to the p-value program, which computes values for more distributions than the p-value program.

Useful links to web-resources on statistics

World of Visual Statistics.