The purpose of matching individual subjects before randomly assigning one to Group A and the other to Group B is to
a. assure that the groups are truly random.
b. assure that the groups are equivalent on the dependent variable.
c. control as many extraneous variables as possible.
d. assure that the groups are not equivalent on the dependent variable.
Question 2
Which would be the least appropriate way to assign subjects to experimental groups?
a. Rolling a die
c. Teacher assignment
b. Flipping a coin
d. Using a table of random numbers.
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