In order for us to study causal relationships among variables, it ...

[misspop]

In order for us to study causal relationships among variables, it is necessary for
 
  A) the independent variable to demonstrate variation.
  B) the dependent variable to be a constant.
  C) the independent variable to demonstrate that it is randomly distributed.
  D) there to be extraneous variation.

Question 2

Without ________, there would be no differences between groups to test.
 
  A) nonmanipulated independent variables
  B) degrees of freedom
  C) uniformity
  D) variation

[courtney_bruh]

Answer to Question 1

Answer: A

Answer to Question 2

Answer: D

[misspop]

Both answers were spot on, thank you once again

[courtney_bruh]

Great! Please up vote