Why Are Groups Compared in an Experiment

question 9

Multiple Choice

Why are groups compared in an experiment?

• A) To isolate whether the treatment affects the outcome
• B) Because they differ in important characteristics
• C) To identify if the groups statistically differ
• D) To eliminate whether groups have different experiences

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Definitions:

Hunger

The physiological condition or feeling caused by a lack of food intake.

Yearly

Occurring once every year or relating to a period of one year.

Nuclear-Weapon Capability

The status of having the technological and material resources necessary to produce and deploy weapons of mass destruction that use nuclear reactions.

Countries

Nation-states with defined boundaries and sovereignty over its territory, recognized by international law and organization.