✅ Top 7 Must-Prepare Topics for Data Analyst Interviews (2025 Edition) 📊🕵️‍♂️

1️⃣ SQL Mastery
⦁ Joins, subqueries, window functions
⦁ Aggregations & groupings
⦁ Query optimization & data manipulation

2️⃣ Excel Skills
⦁ Pivot tables & charts
⦁ VLOOKUP, INDEX-MATCH
⦁ Data cleaning & conditional formatting

3️⃣ Data Visualization
⦁ Tools: Power BI, Tableau basics
⦁ Creating dashboards & reports
⦁ Storytelling with data

4️⃣ Statistics & Probability
⦁ Descriptive stats (mean, median, mode)
⦁ Probability concepts & distributions
⦁ Hypothesis testing & confidence intervals

5️⃣ Data Cleaning & Wrangling
⦁ Handling missing values & outliers
⦁ Data validation & transformation
⦁ Working with messy datasets

6️⃣ Basic Programming (Python/R)
⦁ Data manipulation with Pandas/R tidyverse
⦁ Writing functions & automation scripts
⦁ Simple EDA (exploratory data analysis)

7️⃣ Business Acumen & Problem Solving
⦁ KPIs & metrics understanding
⦁ Translating business questions to analysis
⦁ Communicating insights effectively

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