The effect of nonresponse on representatives of wilderness-trail register information
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The effect of nonresponse on representatives of wilderness-trail register information by Wiley D. Wenger

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Published by Pacific Northwest Forest and Range Experiment Station, Forest Service in Portland Or .
Written in English


  • Wilderness areas

Book details:

Edition Notes

Statementby Wiley D. Wenger, Jr., and H. M. Gregersen
SeriesUnited States Forest Service research paper -- PNW-17, U.S. Forest Service research paper PNW -- 17.
The Physical Object
Pagination20 p. :
Number of Pages20
ID Numbers
Open LibraryOL26556642M

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We used a tailored survey design to obtain a more representative response. Paradata from previous consumer sentiments surveys and register information were used to stratify the sample into groups. Start studying CJ Test 2. Learn vocabulary, terms, and more with flashcards, games, and other study tools. (a) In longitudinal studies, data are missing because of attrition, i.e., subjects drop out prior to the end of the study. (b) In most surveys, some individuals provide no information because of noncontact or refusal to respond (unit nonresponse).Other individuals are contacted and provide some information, but fail to answer some of the questions (item nonresponse). The effect of nonresponse is to confound the behavioral parameters of interest with parameters that determine response. Nonresponse bias is not unique to Internet surveys but the potential problem is quite severe for Web-based surveys that have low response rates and nonrandom recruitment procedures.

In statistics, quality assurance, and survey methodology, sampling is the selection of a subset (a statistical sample) of individuals from within a statistical population to estimate characteristics of the whole population. Statisticians attempt for the samples to represent the population in question. Two advantages of sampling are lower cost and faster data collection than measuring the. Request PDF | Targeted letters: Effects on sample composition and item non-response | General population surveys as well as business surveys are affected by low response rates. There is a need to. A representative sample is one that has strong external validity in relationship to the target population the sample is meant to represent. As such, the findings from the survey can be generalized with confidence to the population of interest. concerns have extended to issues related to nonresponse. Login/Register.   The quality of data collected in survey research is usually indicated by the response rate; the representativeness of the sample, and; the rate of completed questions (item-response). In attempting to improve a generally declining response rate in surveys considerable efforts are being made through follow-up mailings and various types of incentives.