The third variable problem occurs when one variable, for example your independent variable, is actually linked to another variable that you are not manipulating or controlling for. In this example, what might the third variable be? (Example: The larger a child's shoe size, the more vocabulary she has.)
A)her gender
B)her age
C)her dress size
D)her language s

Question

Quizplus · Accepted Answer

As a child gets older, both their shoe size and their vocabulary increase.

The Third Variable Problem Occurs When One Variable, for Example