The data in this Pew Research Center report is drawn from a national cross-sectional survey conducted by Westat. The sampling design of the survey was an address-based sampling (ABS) approach, ...

Survey methodology encompasses the systematic approach to designing, administering and analysing surveys to ensure reliable and valid data. Central to this discipline is the optimisation of response ...

This PhD programme offers the chance to undertake a substantial piece of work that is worthy of publication and which makes an original contribution to the field of methodology or which applies ...