When the relationship between the number of firefighters and the amount of fire damage disappears once we control for the size of the fire,we say that "size of fire" is a ___________ variable.
A)moderator
B)spurious
C)correlational
D)causative
E)valid

Question

Quizplus · Accepted Answer

The "size of fire" is a spurious variable because it explains the apparent relationship between the number of firefighters and the amount of fire damage. Once controlled for, the relationship disappears, indicating that the size of the fire was the underlying factor affecting both variables.

When the Relationship Between the Number of Firefighters and the Amount