The 4 Milestones to Becoming a Data Analyst
1. Advanced Excel: Pivot tables, VLOOKUP/XLOOKUP, index-match, and conditional modeling. 2. SQL Mastery: Aggregations, window functions, CTEs, and cohort retention queries. 3. BI Dashboards: Interactive visual storytelling in PowerBI or Tableau. 4. Python/R Automation: Automating data extraction, cleaning, and scheduled reporting.