Question

Consider the following statistical studies. Which method of data collection would likely be used to collect data for each study? Explain your selection. What is the population of interest? Would you take a census or use a sampling? Explain. If you would use a sampling, decide what type of sampling technique you would use. Explain your reasoning. 2. A study of the success of graduates of a large university in finding a job within one year of graduation. 3. A study of how often people wash their hands in public restrooms.

Answer 1

• For the study of the success of graduates of a large university in finding a job within one year of graduation, we can use survey method to collect the data. We should use stratified random sampling for the data collection so that we can generalized the finding. The age group of this study 21-24 years of adult. Because within this age group a person can complete his/her graduation. Therefore we can take the survey from the fresher employee of the companies.
• For the study of how often people wash their hands in public restrooms, we should use survey method to collect the data. For this study we can also use stratified random sampling, it will be better sampling method for generalization purpose. For this study, we can take large sample of the age of 15- 60 years old people. If the sample will be large then it we good for generalization on the population.