Final answer:
An advantage of telephone surveys is increased respondent honesty while a disadvantage is the potential exclusion of certain demographics, leading to non-representative data and lower response rates.
Step-by-step explanation:
An advantage of conducting surveys where respondents call a telephone number to give their response is the potential for increased honesty from respondents, as they may be more forthright without an interviewer present. However, one major disadvantage of this method is the inability to control who responds to the survey, which can lead to errors or a non-representative sample, particularly because the Telephone Consumer Protection Act prevents automated calls to cell phones, excluding a large and growing segment of the population.
Moreover, robo-polls can suffer from lower response rates, as there is no live person to encourage participation. These factors could skew the results and make the findings less reliable.