If the online survey has asked you to express a descriptive view about a subject, they may use a telephone survey to know more about the views you have expressed and ask you a few short questions that can be quickly answered and clarify the views expressed. Sometimes, respondents who register to get paid to take surveys online are asked about their openness to be a part of a telephone survey for certain surveys. These surveys are short and typically do not take more than 3 minutes of talk time. This is a preferred route for social and economic surveys and your responses are keyed into a database and used for gauging population attitudes.
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