PSY 870: Module 4 Problem Set Grand Canyon university
Problem set covering advanced psychological statistical methods.
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College of Doctoral Studies
PSY 870: Module 4 Problem Set
2 × 3 Between-Subjects Factorial ANOVA: Study Environments by Gender
This study investigates whether study environment affects academic performance. In addition,
this study investigates whether sex of student "moderates" the effect of study environment on
academic performance (that is, do males and females differ in how much benefit they get from
studying in certain environments).
During the first half of the spring semester, 120 male students and 120 female students in grade
10 at a public high school in a large metropolitan area in the southwestern region of the United
States were randomly assigned to one of three study environment: study in front of the TV, at the
library, or in the food court. The students could ONLY study in the environment to which they
were assigned during the research period. At the end of the 7-week research period, mid-term
GPA was computed for each student. A change score was computed for each student: each
student's spring midterm GPA was subtracted from his or her GPA for the preceding fall
semester. The difference was each student's GPA Improvement score. The GPA improvement
score was used to measure academic performance.
Directions:
Using the SPSS 2 × 3 ANOVA data file for (the SPSS data file I have provided) to answer the following
questions. NOTE: Helpful hints are provided here for you to use while answering these questions.
1. What are the two independent variables in this study? What is the dependent
variable?
The dependent variable is GPA Improvement.
The independent variables are Environment and Gender.
2. Why is a two-way between-subjects factorial ANOVA the correct statistic to use for
this research design?
Because there are 2 levels of Gender factor and 3 levels of Environment factors that is
why this is a two-way between-subjects factorial ANOVA.
3. Did you find any errors that the researcher made when setting up the SPSS data file
(Remember to check the variable view)? If so, what did you find? How did you
correct it?
The data was entered correctly in SPSS but measure of a variable is not defined in
proper order.
PSY 870: Module 4 Problem Set
2 × 3 Between-Subjects Factorial ANOVA: Study Environments by Gender
This study investigates whether study environment affects academic performance. In addition,
this study investigates whether sex of student "moderates" the effect of study environment on
academic performance (that is, do males and females differ in how much benefit they get from
studying in certain environments).
During the first half of the spring semester, 120 male students and 120 female students in grade
10 at a public high school in a large metropolitan area in the southwestern region of the United
States were randomly assigned to one of three study environment: study in front of the TV, at the
library, or in the food court. The students could ONLY study in the environment to which they
were assigned during the research period. At the end of the 7-week research period, mid-term
GPA was computed for each student. A change score was computed for each student: each
student's spring midterm GPA was subtracted from his or her GPA for the preceding fall
semester. The difference was each student's GPA Improvement score. The GPA improvement
score was used to measure academic performance.
Directions:
Using the SPSS 2 × 3 ANOVA data file for (the SPSS data file I have provided) to answer the following
questions. NOTE: Helpful hints are provided here for you to use while answering these questions.
1. What are the two independent variables in this study? What is the dependent
variable?
The dependent variable is GPA Improvement.
The independent variables are Environment and Gender.
2. Why is a two-way between-subjects factorial ANOVA the correct statistic to use for
this research design?
Because there are 2 levels of Gender factor and 3 levels of Environment factors that is
why this is a two-way between-subjects factorial ANOVA.
3. Did you find any errors that the researcher made when setting up the SPSS data file
(Remember to check the variable view)? If so, what did you find? How did you
correct it?
The data was entered correctly in SPSS but measure of a variable is not defined in
proper order.
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Document Details
University
Grand Canyon University
Subject
Psychology