Related Experiment Video
Updated: Sep 29, 2026

A Simple Migration/Invasion Workflow Using an Automated Live-cell Imager
Published on: February 2, 2019
A simple questionnaire survey method for studying migration and residential displacement in informal settlements in
Abstract:
"My aim in this article is to describe a cheap and reliable questionnaire survey method which can be used to identify patterns in migration and residential displacement." The method is described in the context of measuring migration in informal settlements in South Africa. "The merit of the method which I have described...lies in the fact that it allows questions of residential movement to be addressed in a routine manner, in much the same way that questions are used concerning, for example, household income."
Related Concept Videos
Surveys
Data Collection by Observations
An astronomer viewing the motion and brightness of stars in the sky and recording the data is an example of observational data collection. A botanist recording...
Data Collection by Survey
Migration
Observational Studies
There are three types of observational studies – Prospective, retrospective, and cross-sectional.
Prospective Study
Prospective studies, also known as longitudinal or cohort studies, are carried out by collecting future data from groups sharing similar characteristics. One example of...
Stratified Sampling Method
To choose a stratified sample, divide the population into groups called strata and then take a...