Arranging the population through some ordering scheme and then selecting the sample by selecting every nth individual in the scheme?

This sampling method is known as systematic sampling. It involves arranging the entire population in a specific order and then selecting every nth individual from that ordered list to form the sample. This technique can be useful for ensuring that the sample is spread evenly across the population, but it assumes that the ordering does not introduce bias. Care must be taken in the initial arrangement to avoid patterns that could skew the results.