Random Digit Dialing

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Random Digit Dialing

The practice in which a computer generates random telephone numbers to dial. This is done in some phone surveys to ensure a random sample. Random digit dialing can include unlisted phone numbers. It is cost effective in some marketing campaigns, provided the area being dialed has a relatively high phone ownership rate. See also: Do not call list.
References in periodicals archive ?
The survey participants were selected through random-digit dialing across the continental United States.
The 460-question survey is being administered to 500 respondents identified through random-digit dialing.
The Bureau also conducts contract survey research and offers a random-digit dialing program for survey organizations in need of random telephone samples.
English-speaking Seattle residents aged 18-39 were contacted by telephone through random-digit dialing.
using industry standard random-digit dialing techniques from a representative sampling provided by Survey Sampling Inc.
The telephone survey of 1,009 Americans was conducted in mid-April by Bruskin/Goldring Research using a random-digit dialing probability sample method as part of MassMutual's ongoing research effort on American family values.
Over 1000 households are polled based on random-digit dialing, with all demographic and regional groups in America fairly represented.
This year's study, the second sponsored by the MassMutual on this topic, is based on the results of focus groups and telephone interviews with 1,200 Americans, selected by random-digit dialing.
3 percent, and utilized a random-digit dialing methodology.