What is sampling? Explain the importance of sampling in research. State the advantage of random sampling in research.
Answers
Simple random sampling is a method used to cull a smaller sample size from a larger population and use it to research and make generalizations about the larger group. It is one of several methods statisticians and researchers use to extract a sample from a larger population; other methods include stratified random sampling and probability sampling. The advantages of a simple random sample include its ease of use and its accurate representation of the larger population.
Advantages of Random Sampling
Simple random sample advantages include ease of use and accuracy of representation. No easier method exists to extract a research sample from a larger population than simple random sampling. There is no need to divide the population into sub-populations or take any steps further than plucking the number of research subjects needed at random from the larger group. Again, the only requirements are that randomness governs the selection process and that each member of the larger population has an equal probability of selection.
Selecting subjects completely at random from the larger population also yields a sample that is representative of the group being studied. Even sample sizes as small as 40 can exhibit low sampling error when simple random sampling is performed correctly. For any type of research on a population, using a representative sample to make inferences and generalizations about the larger group is critical; a biased sample can lead to incorrect conclusions being drawn about the larger population.
Simple random sampling is as simple as its name indicates, and it is accurate. These two characteristics give simple random sampling a strong advantage over other sampling methods when conducting research on a larger population.
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