Problem
Dedric is researching whether or not having breakfast affects an elementary school students' ability to focus in class. He selects twelve students from the elementary school to participate in his study and conducts an experiment where some students are fed breakfast before school and others are not. Dedric then records the time each student focuses on their lessons based on their eye contact with the teacher, note-taking, and abstention from non-academic activities.
Part 1
Identify each of the following elements of Dedric's breakfast study.
a) Population
b) Sample
c) Control group
d) Independent variable
e) Dependent variable
Part 2
Explain one ethical concern one might have about Dedric's study.
Part 3
Explain how confounding variables might influence the results of Dedric's study.