The survey was conducted by telephone with a national sample of adults (18 years of age or older) living in all 50 U.S. states and the District of Columbia. The results reported here are based on ...

A typical Pew Research Center national survey – regardless of mode – is designed and implemented with a total survey error approach in mind, aimed at minimizing ...

Was a clear objective posed? Every questionnaire should be guided by a simple, clearly articulated objective that highlights the topic of interest, the type of respondents and the primary research ...