3) Systematic sampling technique
Explanation: When the population is finite (having a fixed, countable number of units), systematic sampling is commonly used. This technique involves selecting every k-th item from a list of the population, where k is the sampling interval.
For example, if you want to select 10 samples from a population of 100, you would pick every 10th item (100 ÷ 10 = 10).
Other techniques:
- Area Sampling Technique – Used for geographical regions.
- Purposive Sampling Technique – Used for specific, targeted populations based on a purpose or criteria.
- Systematic Sampling Technique – Best for finite populations due to its simplicity and even coverage.