What best describes the role of a hypothesis in research?

• A. It is the final conclusion of a study.
• B. It is a tentative explanation to be tested.
• C. It describes the study population.
• D. It is a data collection instrument.

Answer: (B)

A hypothesis is a tentative explanation you set out to test with your data. It turns curiosity into a testable statement about how variables are related or how an effect might occur, so you can evaluate it with evidence from your study. This keeps research focused: you know what you’re looking for, how you’ll measure it, and what would count as support for or against the idea. It’s not the final conclusion—that comes after collecting and analyzing data. It’s also not a description of who or what is being studied (the population) or the tool used to gather data (the data collection instrument). The hypothesis is the tested claim that guides the whole investigation.