In an experiment to determine the effect of amounts of insecticide on tomato production, an extraneous variable would be the amount of
A) insecticide
B) production
C) both insecticide and production
D) neither insecticide nor production.

Question

Quizplus · Accepted Answer

An extraneous variable is one that is not the independent variable (in this case, the amount of insecticide) but could affect the dependent variable (in this case, tomato production). Since the amount of insecticide is the independent variable and the production is the dependent variable, neither of these would be considered extraneous variables.

In an Experiment to Determine the Effect of Amounts of Insecticide