There are several merits of using sampling as a methodology of research. Some of them include saving on time and labor, it significantly reduces the cost of the operation and so much more.
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They include: Simple random sampling, Systematic sampling, Stratified sampling, Quota sampling, and Cluster sampling.
Sampling and Non sampling errors
Random Sampling
I am not certain that the described activity merits my attention. Do your merits outweigh your demerits?
simple random, stratified sampling, cluster sampling