Skip to main content
United States
Jump To
Support
Register or Log In
Support
Register or Log In
Instructors
Browse Products
Getting Started
Students
Browse Products
Getting Started
Return to Research Methods Using R 1e Student Resources
Chapter 6 Multiple choice questions
Quiz Content
*
not completed
.
What is the effect size (
d
) for a t-test with t=4.41, with 24 participants in each of the two groups?
d
= 1.59
correct
incorrect
d
= 0.53
correct
incorrect
d
= 1.27
correct
incorrect
d
= 1.34
correct
incorrect
*
not completed
.
What is the effect size (
d
) for a correlation of 0.4 with 60 subjects?
d
= 4.39
correct
incorrect
d
= 0.87
correct
incorrect
d
= 80.86
correct
incorrect
d
= 7.96
correct
incorrect
*
not completed
.
What is the effect size (g) for an F-test with F=3.3, and 18 and 12 subjects in the two groups?
g
= 0.53
correct
incorrect
g
= 0.66
correct
incorrect
g
= 0.26
correct
incorrect
g
= 0.68
correct
incorrect
*
not completed
.
What is the odds ratio for a two-tailed t-test which produced a p-value of 0.032 having tested 15 subjects in each group?
OR = 4.46
correct
incorrect
OR = 1.49
correct
incorrect
OR = 0.82
correct
incorrect
OR = 79%
correct
incorrect
*
not completed
.
Which of the following is the largest effect size (Cohen's
d
)?
d
= 1
correct
incorrect
A correlation with r = 0.54 and 20 participants
correct
incorrect
A t-test with
t
= 2.2 and 12 participants per group
correct
incorrect
A chi-square test with
x
^{2}
= 0.77 for 87 participants
correct
incorrect
*
not completed
.
Create two variables as follows, that contain lists of effect sizes (d) and accompanying standard errors:
d <- c(0.82,1.14,0.11,3.4)
se <- c(0.11,0.84,0.15,2.2)
Run a random effects meta-analysis using these variables. What is the mean d?
d
= 0.11
correct
incorrect
d
= 0.94
correct
incorrect
d
= 0.32
correct
incorrect
d
= 0.61
correct
incorrect
*
not completed
.
What is the standard error of the mean effect size from question 6?
SE = 0.32
correct
incorrect
SE = 0.23
correct
incorrect
SE = 0.61
correct
incorrect
SE = 0.11
correct
incorrect
*
not completed
.
Run the analysis from questions 6 and 7 again, but as a fixed effects analysis. What are the mean effect size and standard error?
d
= 0.66, SE = 0.08
correct
incorrect
d
= 0.53, SE = 0.11
correct
incorrect
d
= 0.58, SE = 0.09
correct
incorrect
d
= 0.24, SE = 0.18
correct
incorrect
*
not completed
.
Conduct a random effects meta analysis based on the following data:
d
: 1.14, 2.38, 0.02, 0.64
SE: 0.12, 0.45, 0.01, 0.22
What is the mean effect size?
d
= 0.54
correct
incorrect
d
= 0.96
correct
incorrect
d
= 1.02
correct
incorrect
d
= 0.71
correct
incorrect
*
not completed
.
Repeat the analysis for question 9, but fixing the weights at 1. What is the standard error of the mean effect size?
SE = 0.41
correct
incorrect
SE = 1.04
correct
incorrect
SE = 0.58
correct
incorrect
SE = 0.42
correct
incorrect
Previous Question
Submit Quiz
Next Question
Reset
Exit Quiz
Review all Questions
Submit Quiz
Are you sure?
You have some unanswered questions. Do you really want to submit?
Back to top
Printed from , all rights reserved. © Oxford University Press, 2024
Select your Country