Telephone Interviews - a rapid and moderately inexpensive means of gathering marketing research data.
Advantages of telephone interviews
Can be geographically spread
Can be set up and conducted relatively cheaply
Random samples can be selected
Cheaper than face-to-face interviews ...
is one means of validating or giving assurance that data is collected from qualified respondents who are interviewed under prescribed conditions. Monitoring can be done in person for face-to-face interviews or by telephone for telephone interviews.
 See also: Marketing, Analysis, Point, Purchase, Consumer
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