According to research by Pew Research Center, samples obtained via landline telephone random-digit-dialing are drastically different from the samples obtained using cell phones. Needless to say, this should come into consideration whenever reading any data obtained via telephone sample.
According to research by Pew Research Center, samples obtained via landline telephone random-digit-dialing are drastically different from the samples obtained using cell phones. Needless to say, this should come into consideration whenever reading any data obtained via telephone sample.