Question

school psychology a school psychologist wants to test the effectiveness of a new method for teaching arithmetic using a randomized experiment. she recruits 500 second - grade students in the local school district and randomly divides them into two groups. group 1 is taught by means of the new method, while group 2 is taught by traditional methods. the same teacher is assigned to teach both groups. at the end of the year, an achievement test is administered and the results of the two groups are compared. what is the dependent variable in this randomized experiment?
o score on arithmetic achievement test
o 500 second - grade students
o math grade assigned by teacher.

Explanation:

In an experiment, the dependent variable is what is being measured to see the effect of the independent variable (the teaching method in this case). Here, the achievement test scores of the students are being measured to assess the effectiveness of the new teaching method. So, the scores on the arithmetic achievement test are the dependent variable.

Answer:

Score on arithmetic achievement test