2. Put a suet feeder out in winter. In the winter use a suet feeder to provide extra energy for cardinals and other birds. While this will probably not be the primary feeding choice of cardinals in your area, they may come to a suet feeder to find extra food in the winter.. Put a suet feeder out in winter. In the winter use a suet feeder to provide extra energy for cardinals and other birds. While this will probably not be the primary feeding choice of cardinals in your area, they may come to a suet feeder to find extra food in the winter.
A pilot experiment/study is often used to test the design of the full-scale experiment which then can be adjusted. It is a potentially valuable insight and should anything be missing in the pilot study it can be added to the full-scale (and more expensive) experiment to improve the chances of a clear outcome.
Purpose of Correlational Research. Unlike the other research designs we will study in this course, correlational research can have either of two purposes. One purpose for doing correlational research is to determine the degree to which a relationship exists between two or more variables. Notice that I did NOT say cause-and-effect relationship. Correlational research designs are incapable of establishing cause-and-effect.