Data can be compared. Time can be decreased. Equipment can be added. Procedures can be changed.
I gave my students this multiple choice question: How does repeating an experiment improve the likelihood of obtaining accurate results?

Only one answer is correct among these 4 choices:
- Data can be compared.
- Time can be decreased.
- Equipment can be added.
- Procedures can be changed.

Could you tell me which one is correct?

Data can be compared.