Experiment

Definition

A procedure carried out to support, refute, or validate a hypothesis. It involves manipulating one or more variables to observe the effect on another variable.

5 Must Know Facts For Your Next Test

1. Experiments involve independent and dependent variables.
2. Randomization helps eliminate bias in an experiment.
3. Control groups are used as a baseline to compare experimental outcomes.
4. Replication of experiments increases the reliability of results.
5. Experiments can be classified as controlled (laboratory) or natural.

Review Questions

• What is the primary purpose of conducting an experiment?
• Why is randomization important in an experiment?
• What role does a control group play in an experiment?

Related terms

Independent Variable:

The variable that is manipulated by the researcher to observe its effect on the dependent variable.

Dependent Variable:

The variable being tested and measured in an experiment.

Control Group:

A group in an experiment that does not receive treatment and is used for comparison against the experimental group.