A part of our research design is the data collection process. We often do this by sampling. Differentiate between random and nonrandom sampling methods. As part of your response define several random and nonrandom sampling techniques. Also, as part of your response, explain why random techniques are always to be preferred to nonrandom sampling methods.© BrainMass Inc. brainmass.com October 17, 2018, 12:18 am ad1c9bdddf
We normally have a large population of people. It is impossible to poll every single person in the population for several reasons. It would be too expensive, too time time consuming and too hard to analyze the data. So we would pull random people from our population to be included in our sample.
If it is completely random, each and every single person has an equal chance of being in the sample. Some techniques include:
- Simple Random Sampling: Here we would put all the names in the population in a hat for example, and randomly pull names out to be included in our sample. Every person has a 1/n (where n is the number of people in the population) of being selected to be in the sample
- Systematic sampling: This would be when the names for the population are put on a ...
The expert explains why random techniques are always to be preferred to nonrandom sampling methods. Data collection processes are examined.
Dissertation: Research design, data collection strategies
See attached file.
A well-defined research problem points to a method of investigation. For each method, an appropriate data collection technique should be employed. Consider the dissertation problem and its relation to the research methodology and data collection methods employed in the study. Is there an appropriate relation between each element? Use appropriate references about data collection methods to address the following questions:
What were the data collection methods used for the study? Justify why they were or were not appropriate.
Was the research design consistent with the methods chosen?
What additional items could the author have said about the data collection strategies?
Do you think the data needed to answer the research question(s) could have been collected differently - why or why not? What other methods would you recommend and why? If not, why not? This includes the data collection methods as well as how the methods were conducted or implemented.
Add any additional comments for evaluation not addressed above.
For all the questions above, remember to explain how you came to your conclusions. Support your answers with explanation or evidence drawn from the dissertation and from course readings.