One of the easiest ways to understand the sampling methods in research is to examine the differences between the two basic types. Random and non-random sampling both involve a process of selection by researchers. These methods are usually used in the early stages of survey research. Convenience sampling is particularly useful for survey research because You can deliver results quickly. However, convenience sampling has certain limitations. For instance, it can lead to biased results.
Simple random sampling:
A simple random sample is a common way to gather data for research purposes. This approach has a low bias and provides a representative sample without researcher bias. However, it also has some important disadvantages. Despite its simplicity, simple random sampling is not recommended for all research. In some situations, this method can render data useless, especially if there are too many respondents. In most cases, simple random sampling should be avoided to avoid this problem.
The basic idea behind simple random sampling is to select a subset from a population by chance. This means that each individual in a population has an equal opportunity of being chosen. Often, you can use a table of random numbers to select a subset. A sample with more than a few hundred members is usually the most appropriate size for a study. However, working with large sample sizes can be challenging.
The common use of simple random sampling:
The most common use of simple random sampling is when the researcher does not know too much about the population. This method can lead to bias in sample selection. For example, if a researcher draws a random sample of 25 employees, he might pick 25 men instead of women. This will result in a skewed representation of the population. To avoid this, you must use additional sampling techniques. However, simple random sampling is still an effective method for understanding sampling methods in research.
Homogeneous sampling:
The most straightforward way to understand the different sampling methods in research is to think of them as a random selection process. In this process, individuals are chosen randomly from a population at regular intervals. This type of sampling ensures that the sample size is adequate. The sample is typically comprised of the largest group of individuals, with the remainder chosen randomly. The representative is often categorized into subgroups based on how big or small a firm is.
Another method is known as maximum variation sampling. This sampling process seeks out extreme characteristics and perspectives in a particular population. The advantages of this method are that it ensures the greatest representation of the targeted population. For example, it helps researchers uncover the most common themes and attributes among a group of participants. It is, therefore, the most commonly used research method. However, it is not a perfect method. It is important to use the best sampling methods for a given study.
Stratified sampling:
Stratified sampling, on the other hand, tries to duplicate the statistical features of a population on a smaller scale. The samples are divided by important characteristics and then randomly sampled within each category. For example, if a population has 38% college-educated people, the representatives from each of these groups will be the same. Stratified sampling may be used to understand how much information can be learned from a sample of this size.
Snowball sampling:
Snowball sampling is one of the most popular research methods. Unlike random sampling, this method requires prior contact with study subjects. This gives researchers to access and cooperation. Investigators must act in good faith and establish a positive relationship with study participants. The method is not random but effective in qualitative and exploratory research. Snowball sampling is a good choice for social scientists when the study population is not large enough for a random selection.
Snowball recruitment requires a consent form to be signed by the subject. This form can include a checklist item that is initialled and indicates the subject’s permission for the researcher to contact them later. In addition, the researcher should provide the IRB with a copy of the recruitment item. This copy must contain the same information as the initial recruitment script. These precautions should protect subjects from any harassment or other forms of discrimination that may result from participation in the study.
Author Bio:
Carmen Troy is a research-based content writer, who works for Cognizantt, a globally recognized professional SEO service and Research Prospect; an 论文和论文写作服务 Mr Carmen holds a PhD degree in mass communication. He loves to express his views on various issues, including education, technology, and more.
