1.a). When do researchers use ANOVA vs. Chi-square test?
Indicate two main characteristics of ANOVA and Chi-square tests
(two for each test).
1.b). What are some of the major limitations of both ANOVA and
Chi-square tests? (at least two for each)
Factorial ANOVA
What’s the difference between a one-way ANOVA and factorial
ANOVA?
What is a main effect? What is an interaction? Which should you
interpret first?
Be sure you know how to look for main effects and interactions
in graphs.
Correlation
What is a spurious correlation? Why do we care?
What types of questions can a correlation analysis answer?
What are the 3 main characteristics of a correlation?
How do outliers affect a correlational analysis?
Regression
Which variable goes on...
We have two possible models in two-way ANOVA: the fixed effects
model and the random effects model. What are the differences
between these two models and how does the analysis differ?
Part 2 of 2 - Two-way ANOVA
Two-way ANOVA: For the problem below, use the ANOVA table to
determine whether the main effects and interaction were
significant. Use the table of means and effect sizes to interpret
the significant effects.
Katy is interested in the impact of different types of
studying methods on students’ memory for different topics. She
assesses the impact of flashcards versus study guides on students’
memory of biology versus psychology. The mean performance memory
scores, ANOVA...
A researcher did a two-way ANOVA to test the effects of course
type (two levels: in-class vs. online) and course topic (two
levels: statistics vs. cognitive psychology) on the instructors’
stress levels. A summary table (with a few missing values) is
provided here.
Source
SS
df
MS
F
Between
625
3
---------------------
Type
1
300
12
Topic
5
Type*Topic
200
Within
---------------------
Total
3525
119
---------------------
---------------------
a. Complete the missing values in the table. You must submit
your calculations...
what is the difference between Cohen’s d and eta^2? In one way
ANOVA, two way ANOVA, and repeated measures ANOVA is cohen’s d only
used for one way ANOVA and repeated measures ANOVA?