Part I
In research terms, sampling entails the process of subdividing a large population into smaller groups to ease data collection. The type of sampling method to be adopted depends on the size of the people under investigation. For instance, a population of 1.3 million people would require a stratified sampling method. Stratified sampling entails the subdivision of a large group into smaller groups that are homogenous (Etikan & Bala, 2017). Unlike other sampling methods like simple random, stratified sampling produces a minor error from the data collected. Researchers rely on several factors like physical appearance, gender, and physical well-being to classify strata in stratified sampling. Also, the research would obtain an estimate of the physical and mental health care needs of the whole population. When the types of physical and mental health care needs from each stratum get compiled, the results obtained lead to a conclusion about the entire group of 1.3 million people.
Part II
Researching a minority group faces a lot of challenges due to political, gatekeeping, and ethics issues. For instance, race and police killing problems need to be researched but might get resistance from gatekeepers. However, several tactics can be relied on to evade political, gatekeepers, and ethical challenges (Kay 2019). First, researcher positionality would be a reliable tactic to gain access to minority groups. Second, personal disclosure to the gatekeepers would establish a good relationship with them, thus, increasing the chances of gaining access to Blacks. Finally, the snow sampling strategy would be most reliable to research race and police killings. After identifying one or two persons who have directly been affected by police killing, the researcher would request them to identify others who have faced a similar challenge. As more people are specified and asked to participate in the research study, reliable data will be collected, sampled, and conclusions drawn.
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References
Etikan, I., & Bala, K. (2017). Sampling and Sampling Methods, Biometrics & Biostatistics International Journal . 5(6): 215-217. https://medcraveonline.com/BBIJ/sampling-and-sampling-methods.html
Kay, L. (2019). Guardians of research: negotiating the strata of gatekeepers in a study with vulnerable participants. 1(1): 37-52. http://eprints.glos.ac.uk/6534/3/6534%20Kay%20Guardians%20of%20research%20negotiating%20the%20strata%20of%20gatekeepers%20in%20research%20with%20vulnerable%20participants.pdf
