Scientific Telephone Samples (STS) RDD Sampling Click here for RDD Sampling: Highly representative sample of the population.
Click here for Listed Sampling: Target specific sub-groups
Click here for Business Sampling: Target large or small businesses.

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RDD Sampling

Whether you are concerned with strict statistical representation, enhanced sample productivity, or a fair balance of both we have a solution for you! And, our customizable list of options including stratification, working block screening rate, record code appending, frame element suppression, etc. is state-of-the-art.

  • Overview of RDD & its use
  • EPSEM (Type A) – Pure probability/highly representative
  • Weighted (Type B) – More Efficient
  • Cluster
  • Two-stage designs
  • Cell phone\wireless
  • RDD run-time options

Good RDD samples begin with careful attention to the fundamentals, which means building the most accurate sampling frame ... updating it constantly … and thinking about the samples to be run in an old-fashioned, academically-oriented way.

Since we run thousands of samples for hundreds of researchers each year, our professional staff can make an important contribution to help you decide which type of RDD sample is best suited for your needs.


How to Order a Sample
Placing your RDD, listed or business sample order is as easy as a phone call or an email to STS.

Phone: (800) 944-4-STS
or, request a quote here.

An STS representative will be happy to assist you.

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