Author Question: Nonsystematic, within-groups variability A) has differential effects on only the experimental ... (Read 77 times)

KWilfred · **on:** Aug 4, 2018

Nonsystematic, within-groups variability

A) has differential effects on only the experimental group.
B) has random effects.
C) has no effects on the outcome.
D) cannot be controlled.

Question 2

The variation due to chance factors among individual participants within a group is termed

A) error variance.
B) individual differences.
C) experimental variance.
D) extraneous variance.