8.1 MODIFYING THE FOCUS OF A STUDY In this section, we learned about statistical studies and learned how to critique a study. In this project, we will explore adjusting the parameters of a study to create more useful results. Modify the Study 1. The Refuel Agency determined that college students spent $39.6 billion on food in 2020. Identify the population and the variable in this study. 2. Consider the population and variable from the study. Can you use this information to say anything specific about the population at your college? Explain why or why not. 3. Let's create a more focused population. List three characteristics, clarifications, or restrictions that can be used to more clearly define a smaller population that is a subset of the original population. Then, create a more specific population description. 4. Now. let's focus on a creating a more manageable variable. List three characteristics, clarifications, or restrictions that can be used to more clearly define a narrower variable that is a subset of the original population. Then, create a more specific variable description. Sample Statistics It's likely that the population you chose is too large to get data from every single student in it. If this is the case, we need to decide which type of sampling to use for the study. (If your population is small enough to get data from every person in it, expand it so you can continue the project.} 5. Create a short survey that you would use to collect the data. 8.1 6. Fill in the below table with pros and cons of each sampling method based on the population you chose. Then, determine which sampling method you would choose to perform the study. Sampling Type Pros Cons Random Sampling Stratified Sampling Cluster Sampling Systematic Sampling Convenience Sampling 7. Identify two possible types of bias that your choice of sampling may have