Probability Sampling - Systematic Sampling

Question

Answer 1

Select the first element at random and pick every 𝑖 th element in succession.
The sample interval, “𝑖” is determined by the population size and sample size. For example, if there are 100,000 elements in the population and a sample size of 1,000 is desired, the sample interval 𝑖 is 100

For example, select a random number between 1 and 100. If this number is e.g. 23, the sample consists of elements 23, 123, 223,...
If the order of elements is related to the characteristic of interest, systematic sampling improve representativeness (e.g. if firms are arranged in increasing order of annual sales, a systematics sample will include some small and some large firms)
If the population elements are arranged in in a manner unrelated to the characteristic of interest, systematic sampling will yield results similar to simple random sampling. In this case, a systematic simple random sample may be unrepresentative because it may contain only small firms or a disproportionate number of small firms.

Feldtrenner
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Feldtrenner
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