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About This Tool
A beginner-friendly selector for eight common sampling methods. It considers both what researchers want to learn and how participants can actually be selected. Probability methods can also suit exploratory studies; non-probability studies sometimes support population inference under additional assumptions. The recommendation is a starting point, not a guarantee. No participant data is stored.
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Frequently Asked Questions
Can I use non-probability sampling to draw conclusions about a population?
Sometimes, but population inference requires additional evidence and assumptions about selection. A non-random sample does not automatically support a representative estimate or a conventional probability-sample margin of error.
Can I use probability sampling in exploratory research?
Yes. The research goal alone does not determine the method. What matters is how people are selected and which conclusions the study will make.
What if I choose “I’m not sure yet”?
The Tool tells you that more information is needed rather than forcing a sampling method.
Does this Tool calculate sample size?
No. It recommends a sampling method, explains why it may suit your study, and gives one caution.