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Random-digit dialing Definition

A telephone sampling procedure that generates random combinations of telephone numbers in order to include unlisted numbers in a survey sample.

Random digit dialing is a method used to generate telephone numbers at random to contact potential survey respondents. This approach allows researchers to reach both listed and unlisted numbers, ensuring broader coverage of the population.

Who relies on random digit dialing in market research?

Survey research firms, polling organizations, government agencies, public health researchers and political consultants use random digit dialing to conduct telephone surveys that require representative, population-based samples.

What are key aspects of random digit dialing in market research?

• Telephone numbers are generated randomly.
• Includes both landlines and cell phones.
• Can reduce coverage bias.
• Often used in large-scale national surveys.
• Requires compliance with privacy and calling regulations.

Why is random digit dialing important in market research?

Random digit dialing helps ensure inclusivity and representativeness, particularly when a comprehensive list of phone numbers is not available. It allows researchers to reach diverse demographic groups, which is essential for accurate generalizations.

How do market researchers use random digit dialing?

Researchers use random digit dialing to create unbiased samples for telephone-based studies. They employ automated systems to generate numbers and conduct interviews via computer-assisted telephone interviewing, ensuring data is collected consistently and efficiently.