Non-Response Bias Associated With Statewide Angler Surveys Conducted By Internet
The potential for Internet non-response bias is large due to the relatively low Internet response rate. The overall Internet response rate was 34% in 2011 and 32% in 2012 (15% to 47% and 20% to 46% for each of the fishing license types; respectively). Of 337 variables tested among nine license types in 2011, 36 variables (11%) had significant differences between the Internet data and data collected by mail from a sample of Internet non-respondents. This presentation will summarize the nature and extent of Internet non-response bias and possible methods to correct for the biases.