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Expertise in Excel: Sample

What's an efficient way to rearrange columns in a large dataset?
You have employee names in column A (e.g., "John Smith") and need to extract their first names into column B. Which formula is appropriate?
Which chart type best visualizes how different categories contribute to a total over time?
How do you apply a calculation to an entire column of data quickly, without dragging the formula down?
You're tracking project expenses, and want to alert yourself if spending exceeds 75% of the budget. Instead of manual checks, how do you get a visual alert?
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