In some instances random sampling is not possible Discuss a

In some instances random sampling is not possible. Discuss a couple of reasons why random sampling may not be a possibility in a research study? If a random sampling is not possible, how could a researcher improve a study design to ensure random selection of study participants

Solution

The random sampling is not possible for practical or ethical reasons or both. For example, suppose researchers want to study the effect of alcohol to reduce depression. It would neither practical nor ethical to select a random sample of all depressed patients to participate. The researchers can use voluntary sample for this type of research. A researcher can improve a study design to ensure random selection of study participants by increasing the sample size.