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民意調查
啟動你的專案準備：請依老師指定的資料檔，開出一個新的Quarto專案。
建立一個qmd檔案，寫下你的研究問題與資料描述。
將連結上傳。
Strategic Coupon Analysis: Optimizing Promotional ROI Through Customer Intelligence
Data-Driven Insights for Regork Grocery Chain Executive Leadership, by Almaamar Alkiyumi, Haley Phan, and Hoda Nassar
Working with XML and JSON in R
This document loads book data from three manually created files in HTML, XML, and JSON formats