If we do not observe a sufficiently large between-groups variance, then we have not observed
A) experimenter effects.
B) an effect of the dependent variable.
C) enough samples.
D) an effect of the independent variable.
Question 2
Nonsystematic within-group random errors
A) affect the mean score of the group but not the variance.
B) tend to cancel each other out.
C) do not cancel each other out within the group.
D) influence participants in a group in one direction.