Question:
Respondent answers at their convenience, There is no need to set up interview appointments, Surveys are delivered wherever the mail or email goes: city or country, home or officeNo interviewer is present to inject bias in the way questions are asked,The low cost-per-completion makes it an economical method of surveying large samples
Author: Paul HogueAnswer:
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Paul Hogue![Paul Hogue](https://markdown.memory.com/static/anonymous.png)