random digit

random digit

[′ran·dəm ′dij·ət]
(statistics)
Digit taken from a table of random numbers according to some specified probability rule.
References in periodicals archive ?
For the landline sample, A random digit dialing procedure according to the adm standard based on fixed network connections is to be used.
All respondents were contacted via Random Digit Dialing methodology.
Cell phones numbers are selected using random digit dial methods.
DESIGN: The Menopause Epidemiology Study is a cross-sectional, population-based study of women 40 to 65 years old in the United States chosen from a source population selected by random digit dialing and probability sampling.
However, on most research conducted via the telephone, telephone numbers are generated using a process known as 'random digit dialling'.
We acknowledge that a "bank" of these readily accessible controls could permit more rapid recruitment of participants in numerous age strata and obviate the need for extensive random digit dialing to recruit an adequate age-matched control population in many investigations.
The National Household Education Surveys Program (NHES) includes a series of random digit dial (RDD) surveys developed by the National Center for Education Statistics (NCES) in the Institute of Education Sciences, U.S.
Earlier in the year, Manhattan Research conducted a similar random digit dial telephone survey of 1,208 U.S.
All data were collected by the Gallup Organization, using telephone interviews based on identical random digit dialing sampling methods.
It cautions, however, that the ratings are not readily comparable with those that preceded them because the latest poll has adopted a new polling method known as random digit dialing, as opposed to the older one based on phone directories.
comScore will continue to maintain Media Metrix' North American consumer panel and its Random Digit Dial (RDD) sample design.
Drivers in two commuter van pools performed two subsidiary tasks - delayed digit recall and random digit generation - while traveling a mix of rural secondary roads, limited access expressways, high-density urban drives, and downtown city streets on a daily commute from upstate New York to New York City.