Data Collection strategies Flashcards
Cross sectional survey
Gathers information on a population at a single point in time.
Longitudinal survey
Gathers information over a period of time. Used tom compare results from different periods to recognize trends.
Written surveys
Surveys mailed, printed in paper, or given out in a group setting. Low cost. Low response rate.
Group survey
Effective for targeting a specific group. High response rate and quick. Small sample size.
Drop-off survey
Allows surveys tp be dropped off at a centralized location. Higher response rate than mailing. Can be expensive. Typically smaller sample size than mail.
Oral survey
over the phone or in person. Costs time.
Online survey
Cheap but may not get to people who don’t do digital.
Survey best practices
- Simple, short questions
- Only one question at a time
- No biased phrasing
- No jargon
- Define any complex terms
Probability sampling
Completely random sampling.
Stratified sampling
Pop. is divided into classes and samples are drawn so that the sample matches the same distribution of classes in the population.
Cluster sample
special form of stratified sampling, where a specific target group out of the general population is sampled from. I.E. Elderly people.
Non-probability sampling
No precise connection between sample and population. less useful to extrapolate from. Can be easier to do. I.E. volunteers, people showing up to whatever public meeting.
