25 Excel Formulas Every Data Analyst Must Know 📊 Excel is more than just rows and columns – it’s a powerhouse for data analysis when you know the right formulas! Whether you're preparing reports, cleaning data, or analyzing trends, these formulas will make your work faster and smarter. ✅ Lookups: VLOOKUP, HLOOKUP, XLOOKUP, INDEX+MATCH 🔠 Text Functions: TEXT, LEFT/RIGHT/MID, LEN, TRIM, CONCAT/TEXTJOIN ⚡ Logic Functions: IF, IFERROR, IFS, AND/OR, SWITCH 📅 Date & Time: TODAY/NOW, DATEDIF...