Pew Research Center designed this study to assess the current state of online survey sampling methods – both probability-based and opt-in – and determine their accuracy on general population estimates ...

While previous sections of this report have focused on the kinds of systematic biases that may be the largest worry when it comes to public opinion polls, the variance (or precision) of estimates is ...

A consumer survey is a structured research instrument that captures the opinions, preferences, behaviours, and motivations of a defined target audience at scale. It blends quantitative metrics with ...