Regression toward the mean will probably occur in a matched ...

[ssal]

Regression toward the mean will probably occur in a matched sample when
 
  a. the groups are from different populations.
  b. the groups are randomly assigned from the same population.
  c. the sample is heterogeneous on the dependent variable.
  d. the sample is homogeneous on the dependent variable.
  e. the sample is heterogeneous on the independent variable.

Question 2

Identify the threats to internal validity illustrated in the example below. The students who scored extremely high on a test would score lower if given the test again.
 
  a. Instrumentation
  b. Experimental mortality
  c. Selection-maturation interaction
  d. Statistical regression
  e. Diffusion

[cassie_ragen]

Answer to Question 1

A

Answer to Question 2

D

[ssal]

Thanks for the timely response, appreciate it

[covalentbond]

Excellent