# OCC Statistics Lecture Conditions Affecting Learning Questions

Homework 11: Factorial ANOVAProfessor Smith wants to test the effect of the size of classroom for lectures on learning. They
invite a sample of 20 students to come and hear a lecture on an unfamiliar topic. Half of the
students hear the lecture in a large classroom and the other half hear the same lecture in a
small classroom. One week later, students are given a test on the lecture material. For those
students who heard the lecture in the large classroom, half are tested in the same large room,
and the other half are tested in the small classroom. For the students who heard the lecture in
the small classroom, half are tested in the same small room, and the other half are tested in the
large classroom. The dependent variable is the score each student gets on the test. The
independent variables are lecture condition (large or small lecture room), and the testing
condition (large or small testing room). The scores for each participant are listed below.
Your assignment is to enter the data into jamovi and analyze it using a factorial 2-way) ANOVA.
You must turn in:
1.
2.
3.
4.
The ANOVA Table from jamovi with all effects and effect size (1 point).
Post Hoc Tests from jamovi (1 point)
Graphs and marginal means tables of all effects tested (3 points).
An APA-style write-up of the results (see D2L for the template from the in-class example).
This must include a description of all effects tested (i.e., report of statistical tests in APA
format), as well as a verbal description of all effects (3 points).
5. Answer the question: Do the results of this study support the idea that lecture conditions
affect learning? Why or why not? (2 points)
Scores for students in the large lecture room & large testing room: 15 20 11 18 16
Scores for students in the large lecture room & small testing room: 5 8 1 1 5
Scores for students in the small lecture room & large testing room: 1 4 2 5 8
Scores for students in the small lecture room & small testing room: 22 15 20 17 16
10 Points. Please submit to D2L before 11:59 pm on Sunday, December 4th.

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