Hi!
I am doing research on “does class size affect student achievement”
My independent variable is :Class size
Dependent variable is: Student achievement
For student achievement I will be collecting data from TIMSS for Math and science.
Some of the confounding variables are:
Student level: Students socio-economic background and parents education.
School level: Teachers age, experience and level of qualification.
I am not sure as to which research method would best help me analyze the results and why that would be the best method to employ.