Multiple Choice
The presence of error variance:
A) makes it difficult to determine if your independent variable was effective.
B) makes it easy to determine if your independent variable was effective.
C) increases the internal validity of an experiment.
D) increases the external validity of an experiment.
Correct Answer:

Verified
Correct Answer:
Verified
Q4: Discuss the main effects and interactions in
Q5: The best way to avoid the problem
Q6: Multiple control groups are only necessary when
Q7: A way of reducing error variance is
Q8: In an experiment on the effects of
Q10: In a _ factorial design, each subject
Q11: Carryover effects threaten the internal validity of
Q12: In within-subjects designs, subjects are exposed to
Q13: The different values an independent variable takes
Q14: When you manipulate your independent variable quantitatively,