Author Question: High school graduates have a higher average income than those who did not graduate from high school. ... (Read 304 times)

P68T · **on:** Jun 20, 2018

High school graduates have a higher average income than those who did not graduate from high school. In this situation we can rule out:

a. common cause. c. Both of these answers.
b. reverse causality. d. Neither of these answers

Question 2

In experimental research, a random procedure is recommended for the

a. selection of subjects. c. ordering of multiple treatments.
b. assignment of subjects to treatments. d. Al of these are true.