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Excel Power Query for Data Analysis and Cleaning
The chapter explores the use of Power Query in Excel for transforming and cleaning data, emphasizing its role in the business intelligence workflow. It discusses Power Query's user-friendly interface compared to DAX, Excel's new features like dynamic arrays and the let function, and the relevance of Excel in data science for tasks like creating dashboards. The chapter also focuses on effectively communicating technical concepts to executives through visualizations and data storytelling, stressing the importance of simplicity and appealing to emotions.