At Minimum, How Many Independent Variables Must Be Included in a Study

question 3

Multiple Choice

At minimum, how many independent variables must be included in a study in order for it to be classified as an experiment?

• A) none
• B) one
• C) two
• D) three

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Definitions:

Siblings

Brothers or sisters, including those by full blood, half-blood, or through adoption.

Cousins

Relatives with whom one shares a common ancestor, but more distant than a sibling or a direct parent/child relationship.

Non-Family Members

Individuals who are not related by blood, marriage, or legal adoption to a particular person or family.

Egoistic Helping

When a helper seeks to increase his or her own welfare by helping another.