. Describe sampling theory and provide examples to illustrate your definition.

Sampling theory is a branch of statistics which looks at the selection of items from a population in order to gain insight into certain phenomena. For example, when conducting a survey on customer satisfaction – one could randomly select respondents from this group in order to gain an accurate representation of how people view the product or service being offered accordingly.

Moreover, sampling theory also involves working out the optimal sample size for any given situation. This can be done by calculating things such as margin of error and confidence intervals so that enough data is collected accurately without overstating results unnecessarily.

Overall, by understanding these concepts – it becomes easier to draw meaningful conclusions about any particular phenomenon moving forward. Thus, with the help of sampling theory – we can make more reliable predictions about any situation while also ensuring our findings are representative of reality aptly correspondingly.