Lecture 16 – March 17th
• Selfadministered questionnaires
o Questionnaires in which respondents are asked to complete the questionnaire by
o Mail distribution and return
Mail out a survey package and hope people fill it out and return it
Why do people not return questionnaires? – represents an intrusion on their life.
People won’t always return them
Need to encourage competition – provide postage pay on return envelope.
Include return envelope in survey package or offer some sort of reward or
incentive; this will vary on the type of population you’re surveying.
o Response rate – the number of people participating in a survey divided by the number
selected in the sample
Ideal = higher than 70%
If you get a response rate under 70% you have to match up survey demographics
to the people that did complete your survey
Want to be able to determine if the people who completed the survey are
representative of your population
• Interview surveys
o Interview – one person (interviewer) asks questions of another (respondent); i.e., faceto
o Often used instead of selfadministered surveys when qualitative data is needed; or if
technical information is required
Canadian community health survey
Survey of financial security
• Telephone surveys
Almost 100% of households have a telephone
Time and money
• Unlisted phone numbers
• Cell phones – research shows cell phone only households are different than the
traditional household that has a land line. Challenges with cellphones – don’t
have readily available list of cell phone numbers – more costly.