University of Wisconsin Knowledgebase
This document describes how to determine a sample size to get the best results for your survey.
Sending surveys to everyone on campus or to all of your customers will soon train people to delete survey messages unread. Do not simply send to everyone.
Select only classifications of participants that are appropriate for the topic of your study, (e.g., full-time vs part-time employees). Select the smallest sample size that meets your needs. The figure may be smaller than you think, for example Gallup and other polling firms use a sample of about 1200 interviews to represent the interests of 260 million Americans.
There are different formulas for calculating sample size. Creative Research Systems provides a sample size calculator.
Response rates to web surveys typically range from 30-60%.
| Keywords: | web survey websurvey sample size response rate responses | Doc ID: | 3991 |
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| Owner: | Cathy R. | Group: | Help Desk |
| Created: | 2005-09-06 | Updated: | 2006-08-23 |