PSY 706 Intermediate Statistics I
Yueran Yang, Ph.D.
Fall 2016
Todays Agenda
Frequency distributions
Graphs
Making graphs in
2
Frequency distributions
Also called frequency tables
One column: all possible values/categories of a variable
A second col
1
PSY 706 Intermediate Statistics I
Hypothesis Testing &
Sampling Distribution
Yueran Yang, Ph.D.
Fall 2016
Announcements
Homework #2 posted
Due next Thursday (Sep 22)
Homework #1 solution will be posted today
3
Questions before class
What is a p-valu
PSY 706 Intermediate Statistics I
t-tests
Yueran Yang, Ph.D.
Fall 2016
Last week
Normal and standard normal distribution
Hypothesis testing
Statistical decision-making
Type I and Type II errors
Sampling distribution of the mean
Central Limit Theorem
PSY 706 Intermediate Statistics I
Yueran Yang, Ph.D.
Fall 2016
Announcements
Extra lab sessions
Thursday 2-3 pm
MSS 345
Homework
Read my R scripts
Work with others
Google is your best friend
Seek help from Ann E. and me
DO NOT submit your R codes
APA
PSY 706 Intermediate Statistics I
Effect size, Confidence interval
& Nonparametric Test
Yueran Yang, Ph.D.
Fall 2016
Last week
The t-statistics
When we use s2 in place of 2
The t-tests
One-sample t-test
Matched samples t-test
Independent samples t-
PSY 706 Intermediate Statistics I
Effect size & Confidence interval
Yueran Yang, Ph.D.
Fall 2016
Tuesday
The t-statistics
When we use s2 in place of 2
=
=
/
~
The t-tests
One-sample t-test
Matched samples t-test
Independent samples t-test
2
Tues
Appendix
A
STATISTICAL TABLES
Note: All of the entries in the following tables were computed by the author, except where otherwise indicated.
Table A.1
Mean to z
Areas Under the
Standard Normal
Distribution
Beyond z
Mean z
z
.00
.01
.02
.03
.04
.05
.06
.0
PSY 706 Intermediate Statistics I
Nonparametric Tests
Yueran Yang, Ph.D.
Fall 2016
Effect size
Tuesday
Cohens d = standardized mean difference
Confidence interval
Confidence level refers to the process we construct the
CI, not the prob where the popu
PSY 706
Sample Exam 1 Solution
Name:
This is a closed book exam. You may use only your calculator, pencils, blank paper, your own
formulas sheet, and the tables attached to this exam. You have two hours to complete the exam.
Display any formulas used in y
PSY 706
Sample Exam 1
Name:
This is a closed book exam. You may use only your calculator, pencils, blank paper, your own
formulas sheet, and the tables attached to this exam. You have two hours to complete the exam.
Display any formulas used in your calcu
PSY 706
Intermediate Statistics I
Yueran Yang, Ph.D.
Fall 2016
Todays Agenda
Why Statistics?
Everything about R
2
Why is my evil instructor forcing
me to learn Statistics?
3
Scientific
Research
4
Parameters
(e.g., )
Statistics
(e.g., )
5
Concepts Review
PSY 706 Intermediate Statistics I
Normal Distribution
Yueran Yang, Ph.D.
Fall 2016
Announcements
Extra lab sessions
Thursday 2-3 pm
404 MIKC
Homework
Use the online discussion forum
Exam room scheduled
Midterm 1: Oct 4
Midterm 2: Nov 8
Final: Dec 13