Multiple Choice
If an extraneous variable affects all groups equally:
A) within-groups variance is increased.
B) it is more difficult to reject the null hypothesis.
C) there is increased probability of a Type II error.
D) all of these
Correct Answer:
Verified
Correct Answer:
Verified
Q2: If two groups are unequal at the
Q3: Describe the counterbalancing procedure as it relates
Q4: In the example cited in the chapter
Q5: The best way to eliminated potential confounds
Q6: What is the difference between participant selection
Q7: Participant selection procedures affect:<br>A) internal validity.<br>B) external
Q8: Control can help researchers make conclusions about
Q9: Experiments conducted in artificial environments may lack:<br>A)
Q10: To assign participants to groups in a
Q11: Discuss the logic of experimental design in