Simple Random Sampling Steps and Examples for Accurate Representation

Learn the steps and see examples of simple random sampling, which ensures each member of a population has an equal chance of ...
Pew Research Center

Advances in Telephone Survey Sampling

Note: This report was updated on Dec. 30, 2015 to reflect the January-July 2015 National Health Interview Survey estimates released on December 1, 2015. Telephone surveys face numerous challenges, but ...
National Academies of Sciences%2c Engineering%2c and Medicine

Small Populations, Large Effects: Improving the Measurement of the Group Quarters Population in the American Community Survey

The sampling frame for the American Community Survey (ACS) is based on the Master Address File (MAF), which is the Census Bureau’s inventory of known housing units, group quarters (GQ), transitory ...
Simon Fraser University

Sample Selection Methods

PROC SURVEYSELECT provides a variety of methods for selecting probability-based random samples. With probability sampling, each unit in the survey population has a known, positive probablity of ...
Pew Research Center

1. Assessing the accuracy of online nonprobability surveys

To better understand the current landscape of commercially available online nonprobability samples, Pew Research Center conducted a study in which an identical questionnaire was administered to nine ...