Assignment 1: Discussion Question
By Saturday, January 16, 2016 respond to the discussion question. Submit your response to the appropriate Discussion Area. Use the same Discussion Area to comment on your classmates’ submissions and continue the discussion until Wednesday, January 20, 2016. All written assignments and responses should follow APA rules for attributing sources.
Discuss the advantages and disadvantages of at least 2 different sampling methods. Describe how researchers go about selecting a sampling strategy. What role does the research question play in choosing the sample? What does it mean to have a representative sample and why is this vital to the outcome of the study? You may wish to incorporate some of the scholarly sources you have been reviewing for your research project within your discussion.
There are many different types of sampling. Probability sampling is when involves random sampling and nonprobability sampling does not. The study being conducted largely affects what type of sampling one will do. To obtain information across a large population I think random sampling would be best. There is also quota sampling in which you only sample the number of people you need. There is target sampling in which you would use if you are targeting specific groups. A researcher would need to choose what method would work best for the type of information they are seeking. They also have to take into consideration the time, money, and available population when making a selection. In order to get more valid results one has to examine all the factors such as who, what, when, and why the research is being conducted to determine the proper sampling method. A representative sample is a sample that represents the whole population. This representative sample matches the population as a whole in its characteristics and key variables that are under analysis. The representative sample lets the researchers better generalize the results of their study to the population as a whole (Cherry, 2014).
The two sampling strategies I am going to discuss is convenience sampling and expert sampling which is a selective sampling method. Convenience sampling is a type of non-probability sampling. This method is often easy and cheaper. The researcher can simply stand somewhere and ask people to do a survey or something of the like. This method can lead to biased results and does not represent the entire population but it allows one to achieve the sample size they want relatively cheap and easily. This method can allow access to places in which probability sampling may not. For example if you are unable to obtain a specific list of names for a company but you can sit in for a lunch period at the company, then convenience sampling would allow you to get your data.
Expert sampling is a form of target sampling. This method does just what it sounds like. It targets a specific group. Expert sampling is used when you are trying to get the “opinions of people with a relatively high level of skill or knowledge” (Changing Minds, 2014). An example of this is when you see the commercials that say “1 in 5 dentists recommend this brand of toothpaste.” This is largely used in marketing as people generally respect and believe in something more when they hear that some experts approve of it. While this method seems like it would offer better opinions, one must be careful because the criteria to be an “expert” is not really that strict. Many of the experts you see on newscasts are not really an expert but no one questions them about it we just believe that because they are labeled an expert that they are more knowledgeable.
Expert sampling. (2014). Retrieved January 16, 2016, from http://changingminds.org/explanations/research/sampling/expert_sampling.htm