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    Nonprobability

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    What are nonprobability surveys?
    Many online surveys are conducted using “nonprobability” or “opt-in” samples, which are generally easier and cheaper to conduct. In our latest Methods 101 video, we explore some of the features of nonprobability surveys and how they differ from traditional probability-based polls.
    Video Explainer: What are nonprobability surveys?
    Our latest Methods 101 video explores some of the ways these surveys differ from traditional probability-based polls.
    What we learned about online nonprobability polls
    The advantages of these online surveys are obvious – they are fast and relatively inexpensive, and the technology for them is pervasive. But are they accurate?

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