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The community
has essentially little control over who responds-kind of like having a party
and waiting for people to show-up.
Response rates are how many respondents sent back a useable
questionnaire.
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Higher response
rates are more representative of the community this Decreases selection bias!
selection bias is when someone responds who has a reason/agenda) Only these people responded because they
hate the industrial site in their backyard.
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Average response
rates are 20-25% but this can be beaten!!
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Response rates
are Dependent upon:
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Design of the
survey-how easy is it to fill out? Is
it pretty?
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Number of
mailings-more mailings increases the chance the respondent will send back a
questionnaire-up to a point!
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Incentives cash
is effective!!
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Advertisement
helps to increase response rates.
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