Question

A school psychologist wants to test the effectiveness of a new method of teaching French. She recruits 500 first -grade students and randomly divides them into two groups. Group 1 is taught using the new method, while Group 2 is taught via 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 compared.

What is the response variable in this experiment?

A.The score of Group 2 on the achievement test

B.The score of Group 1 on the achievement test

C.The score on the achievement test

D.The students' ability in French

Which of the following explanatory variables is manipulated?

A.Teacher

B.Method of teaching

C.Grade level

D.Intelligence

How many levels of the treatment are there?

What type of experimental design is this?

A.Survey

B.Randomized block design

C.Completely randomized assignment

D.Matched pair

Identify the subjects.

A.The teachers

B.The school district

C.The500 students

D. All students in the school district

Answer 1

Hello,

What is the response variable in this experiment?

ans- C.The score on the achievement test

the responce is score of the test.

Which of the following explanatory variables is manipulated?

ans - A.Teacher

teacher can manipulate the methode of the teaching, so teacher can maniplute the results.

How many levels of the treatment are there?

Ans - method 1 and Method are two methods

What type of experimental design is this?

ans - C.Completely randomized assignment

Identify the subjects.

C.The500 students

Thanks