The fields/subject area of this research paper are sociology, data analysis, and statistics. The purpose of writing this research paper is mainly to see how we perform the data and apply the simple linear regression to real world data through using R. We have already handed in the initial project proposal and mid-term proposal. I will upload 3 files to you. One is the course introduction with guidelines of project. One is the initial proposal(docx) and one is the mid-term proposal(ppt). We hope that you can use the three X’s that we have set to deal with this empirical question. However, you may change our X variables that we have set if you perceive the X variables are weird. In addition, no.5 – no.9 part in the guidelines of project are the most crucial parts in this research paper. We hope you can be more specific in these 4 parts. Regarding to the no.11 (R scripts and supplementary files), we hope you can provide all the R scripts and codes you used to us.