If you conduct phone surveys, but the survey administrators don't all read the questions in the exact same way to every respondent, what aspect of data quality is being threatened?

Question

Quizplus · Accepted Answer

Reliability is threatened because inconsistent administration of the survey questions can lead to variations in responses that are not due to actual differences in opinions or behaviors, but rather due to differences in how questions are presented.

If You Conduct Phone Surveys, but the Survey Administrators Don't