Wondering how many people in the United States have a smartphone? If you poll 20 people on the street, your survey won’t be representative of the entire American population. But if you just want to ...

Until earlier this year, Professor Ryan was a member of the Methodology Advisory Committee for the Australian Bureau of Statistics. She receives funding from the Bill and Melinda Gates Foundation, the ...

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 ...

As part of a facility’s sharps injury prevention program, it is valuable to help product evaluation teams or committees determine how devices are used in their healthcare organization. Included in the ...

Measuring the identity of Taiwanese Americans, and Asian origin groups in the United States more generally, is a challenging endeavor, whether in survey research or when trying to generate estimates ...