Author Question: Extraneous variance in a study A) is unwanted. B) is highly desirable. C) is desirable in some ... (Read 107 times)

Bob-Dole · **on:** Aug 4, 2018

Extraneous variance in a study

A) is unwanted.
B) is highly desirable.
C) is desirable in some circumstances.
D) has no impact on the chances of getting statistical significance.

Question 2

Controls are necessary to

A) reduce extraneous variation.
B) enhance extraneous, between-groups variation.
C) neutralize all differences between groups.
D) increase within-groups variation.