Snowball sampling is a special nonprobability method used when the desired sample characteristic is rare.
In experimental research, it is especially important to give enough detail for another researcher to reproduce your results. Experiments Give full details of the tools, techniques and procedures you used to conduct the experiment. Find and since airborne laser scanning als is one of methods of.
What can proofreading do for your paper? You might want to include the full questionnaire as an appendix so that your reader can see exactly what data was collected.
What research problem or question did you investigate, and what kind of data did you need to answer it? Systematic sampling is frequently used to select a specified number of records from a computer file.
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