In: Statistics and Probability
Our research center has been asked to do a survey of adults in our community regarding quality of life.Specifically, we want to determine how satisfied respondents are with different areas of their local community including the local economy, level of crime, road conditions, health services, and education. We decide to do a phone survey of households in our community.
Suppose we select a sample of phone numbers from the local phone directory.What types of coverage error would that introduce? Do you think the amount of coverage error would be fairly small or quite large?Why?
Someone points out to us that published phone directories do not typically include cell phones so we contact a reputable research service that provides samples of both cell phone and landline numbers.What would that do to our coverage error?Would there be any remaining sources of coverage error?What would they be?Do you think they would be fairly small or quite large?Why