Question

mr. ikeler conducted a study investigating the effectiveness of a new method for teaching a mathematics unit. he recruited 80 students at a college and randomly assigned them to two groups. group 1 was taught with the new method, and group 2 was taught with the traditional method. both groups were taught by the same teacher. at the end of the unit, an achievement test was administered and used to make a comparison of the two groups. what is the response variable in the study?
a the new teaching method
b the traditional teaching method
c the teacher in the study
d the score on the achievement test
e the 80 students

Explanation:

A response variable is what is measured in an experiment. Here, the goal is to see the effect of teaching methods on students' performance. The achievement - test score is what is being measured (it responds to the teaching method). Options A and B are the explanatory variables (the ones being manipulated - the teaching methods). Option C (the teacher) is a constant (same teacher for both groups). Option E (the 80 students) is the subject pool.

Answer:

D. The score on the achievement test