Sampling Strategy Peer Review

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In many cases, population under study is normally large covering a wide area, which consumes many resources in terms of money and time for the researcher. For this reason, researchers breakdown the population into small sections called samples. Therefore, sampling is the process of selecting units, individuals or sections of a large population under study. Qualitative research seeks to get an in-depth understanding of the population under study, which calls for creating samples that have the particular characteristic of the research (Camic et al, 2003). Therefore, this research often uses purposeful sampling strategies significant to the study. Nonetheless, there are many sampling strategies used in qualitative research, for instance, extreme case sampling, intensity sampling, homogeneous sampling, and stratified purposeful sampling. However, these strategies are not mutually exclusive and a researcher may combine several of them during his or her study. Stratified purposeful sampling is the strategy to use in this qualitative study.

Stratified Purposeful Sampling

According to Ritchie et al (2013), stratification is the process of subdividing samples into smaller sections called strata. This method is similar to stratified random sampling used in quantitative research. Nevertheless, in qualitative research, the strata aremuch smaller and focus on particular subgroups of a characteristic of interest.In addition, it facilitates comparison.

Rationale for stratified purposeful sampling. Any researcher aims at maximizing validity and efficiency of information collected (Willig, 2013). Therefore, it is essential to use a sampling strategy that achieves this. Stratified purposeful sampling subdivides the population under study until exhaustion of any substantive information. Remember that qualitative research seeks to get an in-depth understanding of the population under study. Therefore, this sampling strategy ensures that the researcher acquires all the relevant information from the samples of interest by capturing the major variations.Additionally, this method is useful in cases of limited resources necessary for the research.

Sample size. For any qualitative research, it is essential to identify the sample size to use. Remember, in this strategy, the further subdivision of the sample occurs. Sample sizes are important while setting the budget and allocating resources to the research (Palinkas et al, 2013). Similarly, the researcher has the ability to conduct rigorous and systematic research once the sample sizes are clearly set out. For this study, the total population consists of 51 students. I plan to divide them into three samples of 17 students. In addition, I plan to subdivide these samples further into strata of five students. A small group is manageable and saves time as peers focus more on the discussion under study. In the light of this, the research will require less effort and time. Furthermore, the groups will acquire and exhaust all the required information for the study.


In conclusion, any qualitative research seeks to get an in-depth understanding of the population under study. In many occasion, resources may be scarce limiting the extent of the research. However, researchers can overcome this by using sampling strategies that have the ability to capture data from limited resources. A good example is the stratified purposeful sampling strategy. As seen above, this strategy subdivides samples further into strata focusing on particular characteristic of the interest under study. This aids comparison as well as exhaustion of all necessary information that a researcher can derive from the sample under study. Ultimately, stratifies purposeful sampling strategy is the best strategy to use in this qualitative study.



Camic, P. M., Rhodes, J. E., Yardley, L., & Bamberg, M. (2003). Qualitative research in Psychology.

Palinkas, L., Horwitz, S., Green, C., Wisdom, J., Duan, N., & Hoagwood, K. (2013). Purposeful Sampling for Qualitative Data Collection and Analysis in Mixed Method Implementation Research. Administration and Policy in Mental Health and Mental Health Services Research Adm Policy Ment Health, 533-544.

Ritchie, J., Lewis, J., Nicholls, C. M., & Ormston, R. (Eds.). (2013). Qualitative research practice: A guide for social science students and researchers. Sage.

Willig, C. (2013). Introducing qualitative research in psychology. McGraw-Hill Education (UK).