A data analyst is someone who uses data to improve how a business runs day-to-day. They work on the efficiency, cost, and performance of operations - things like supply chains, logistics, staffing, and production. Core Responsibilities: - 1. Data collection Gather data from databases, systems, or external sources Use tools like SQL to extract data 2. Data cleaning Fix errors, remove duplicates, handle missing values Make sure the data is accurate and usable 3. Data analysis Identify trends, patterns, and anomalies Apply basic concepts from Statistics 4. Data visualization Create charts, dashboards, and reports Use tools like Microsoft Excel or Tableau 5. Reporting & communication Explain findings in a simple way to non-technical teams Present insights to managers or stakeholders 6. Business support Help teams make decisions based on data Suggest improvements (e.g., reduce costs, increase sales)