| dbo:abstract |
Der Begriff Random digit dialing (RDD) bzw. Zufallstelefonbefragung bezeichnet ein Verfahren zur Stichprobenziehung bei telefonischen Befragungen. Dabei werden Teile der Telefonnummern zufällig generiert. Das Verfahren wurde in den USA entwickelt, wo die ersten drei Ziffern der zehnstelligen Telefonnummern für eine Region und die nächsten drei für eine Vermittlungsstelle stehen. Diese Kombinationen sind in Listen eingetragen und verfügbar. Durch RDD werden dann die letzten vier Ziffern zufällig angehängt. Ein Grund für die Verwendung von RDD-Techniken ist, dass in der heutigen Zeit immer weniger Telefonanschlüsse (Festnetz oder Mobil) im Telefonbuch gelistet sind. Eine Variante des Random Digit Dialing ist das Randomized Last Digit-Verfahren. (de) Random digit dialing (RDD) is a method for selecting people for involvement in telephone statistical surveys by generating telephone numbers at random. Random digit dialing has the advantage that it includes unlisted numbers that would be missed if the numbers were selected from a phone book. In populations where there is a high telephone-ownership rate, it can be a cost efficient way to get complete coverage of a geographic area. RDD is widely used for statistical surveys, including election opinion polling and selection of experimental control groups. When the desired coverage area matches up closely enough with country codes and area codes, random digits can be chosen within the desired area codes. In cases where the desired region doesn't match area codes (for instance, electoral districts), surveys must rely on telephone databases, and must rely on self-reported address information for unlisted numbers. Increasing use of mobile phones (although there are currently techniques which allow infusion of wireless phones into the RDD sampling frame), number portability, and VoIP have begun to decrease the ability for RDD to target specific areas within a country and achieve complete coverage. (en) ランダム・デジット・ダイヤリング（英: Random digit dialing、RDD）とは、コンピュータで無作為に数字を組み合わせて電話をかけて行う統計調査（電話調査）の一種。 (ja) |
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http://www.amstat.org/sections/srms/Proceedings/papers/1980_155.pdf%7Ctitle=An http://aje.oxfordjournals.org/cgi/content/full/153/11/1119%7Carchive-url=https:/archive.today/20130415134014/http:/aje.oxfordjournals.org/cgi/content/full/153/11/1119%7Curl-status=dead%7Carchive-date=2013-04-15%7Ctitle=Comparison |
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| rdfs:comment |
ランダム・デジット・ダイヤリング（英: Random digit dialing、RDD）とは、コンピュータで無作為に数字を組み合わせて電話をかけて行う統計調査（電話調査）の一種。 (ja) Der Begriff Random digit dialing (RDD) bzw. Zufallstelefonbefragung bezeichnet ein Verfahren zur Stichprobenziehung bei telefonischen Befragungen. Dabei werden Teile der Telefonnummern zufällig generiert. Das Verfahren wurde in den USA entwickelt, wo die ersten drei Ziffern der zehnstelligen Telefonnummern für eine Region und die nächsten drei für eine Vermittlungsstelle stehen. Diese Kombinationen sind in Listen eingetragen und verfügbar. Durch RDD werden dann die letzten vier Ziffern zufällig angehängt. (de) Random digit dialing (RDD) is a method for selecting people for involvement in telephone statistical surveys by generating telephone numbers at random. Random digit dialing has the advantage that it includes unlisted numbers that would be missed if the numbers were selected from a phone book. In populations where there is a high telephone-ownership rate, it can be a cost efficient way to get complete coverage of a geographic area. RDD is widely used for statistical surveys, including election opinion polling and selection of experimental control groups. (en) |
| rdfs:label |
Random Digit Dialing (de) ランダム・デジット・ダイヤリング (ja) Random digit dialing (en) |
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