Author Question: When subjects are measured on some trait they already possess, and are then categorized on the basis ... (Read 74 times)

sheilaspns · **on:** Jun 20, 2018

When subjects are measured on some trait they already possess, and are then categorized on the basis of that trait, the independent variable has been

a. assigned
b. manipulated
c. confounded
d. actively altered by the experimenter

Question 2

If you examined the effect of studying 0, 1, or 2 hours a day on grades, how would you write the null hypothesis?

a. D = 0
b. 1 - 2 = 0
c. 1 - 2 - 3 = 0
d. 1 = 2 = 3