APPENDIX C
Glossary
Area probability sample a sample generated by dividing a geographic area into a number of smaller areas, and then sampling from a subset of these areas
Coverage error bias resulting from the omission of units from the sampling frame
Energy star certification a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy that certifies energy-efficient products
Geocoding the process of appending geographic identifiers (codes or coordinates) to an address
LEED certification a building certification system providing verification that a building was designed and built according to set of “green” standards
List sample a sample generated from a sampling frame that exists in a list form
Multistage sampling a sampling process involving several stages, in which units at each subsequent stage are subsampled from previously selected larger units
Sampling frame the set of units from which the sample is selected
Sampling units the individual units selected from the sampling frame
Show card an interviewing aid consisting of a paper version of answer options or definitions associated with questionnaire items and used during an in-person interview when the questions are read to the respondent, and may be too difficult to understand or remember without a visual aid (also referred to as hand cards or flash cards)
Stratified sample a sampling technique that involves dividing the sampling frame into distinct subgroups of similar units, and then selecting a separate sample from each of the subgroups
