Welcome to Psyc 241
Research Design & Analysis I
Chapter 1
Math course?
Review basic math
Recommend basic calculator
Goal: You can read a Results section!
Formulas
Most Provided to You
See Test
Psychology 241 Test 1 (Chapters 1-5)
Bring a Calculator (Cell Phone Calculators not allowed)
On the day of the test, I will collect and go over Chapter 5 homework. I recommend you bring a copy (or
dig
Reminders
Return Ch 2 Hwk
Ch 3 Hwk Due
Ch 4 Due Next Class
Error #24 should refer to the data in 23 (not 25)
Lab Today: Merge
Correct any errors
Merge one at a time
Work on Ch 4 hwk while wait
Chapter 6 Review: Z-scores
X X
z
SX
1.
2.
3.
4.
5.
6.
X ( z )( S X ) X
Compare Dif Variables
Find Raw Score
Find rel.f.
Find simple Frequency (rel.f. x N)
Find Percentile (add up all rel.f below
Psychology 241
Exam 2
1
Part 1. Multiple Choice
1. You transform a raw score to a Z-score and find Z = 0. A Z-score of zero means that the raw score:
A) did not occur in the distribution.
C) is the me
Agenda
Review Tests and Ch 5 Hwk
Chapter 6
Z-Scores and the
Normal Curve
Z-scores
Deviation Score Review
How far is each raw score from mean?
Z score
How many Sx is a raw score from mean?
Z-scor
Agenda
Chapter 1 Homework Due Today
Chapter 2 Homework Due Next Class
Survey Progress?
Review
Proportion vs Percent
Experiment vs Correlation
Quasi vs True Experiment
Random Sampling vs Random
Announcements
Return Ch 3, Collect Ch 4
Ch 5 and Test Next Class
Today: Chapter 5
Lab Time: Work on Practice Test or Ch 5 Hwk
Chapter 5
Measures of Variability:
Range, Variance, Standard Deviation
Var
Agenda
Return Ch 1, Collect Ch 2 Homework
Ch 3 Hwk Due Next Class
Error: #22 Refer to Question 21 (not 23)
Ch 3 Review
Simple Frequency (f) and rel.f.
Frequency Dist Graphs
Nom/Ord = Bar
Int/Ratio
Agenda
Ch 9 Due
Ch 10 Due Next Week- Questions?
Errors
Type I (false positive, alpha)
Type II (false negative, beta)
Practice!
Explain Type I vs. Type II for each hypothesis
My cat Sassy is pre