The use of sampling is a strategic decision by the researchers to focus on some, rather than all, of a population of interest. This is premised on the fact that it is possible to produce credible results without the need to collect data from each and every member of the population. This lesson will first explain 12 terms that are used in sampling. These terms are population, sample, sample size, sampling, sampling frame, subject, element, statistic, parameter, response rate, randomization & precision.
The second part of this lesson will discuss the 6 purposes of research. We shall be asking ourselves, is it prudent to use the whole or using the part is better? Finally, we shall explain the limitations of sampling.