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Here is Data Science / Data Analytics explained in detail in English, step by step.
📊 Data Science & Data Analytics – Complete Guide
🔹 What is Data?
Data means information, such as:
- Sales records
- Student marks
- Customer details
- Website traffic
Analyzing this data to make better decisions is called Data Analytics or Data Science.
🔍 Difference Between Data Analytics & Data Science
| Data Analytics | Data Science |
|---|---|
| Analyzes past data | Predicts future outcomes |
| Focus on reports & dashboards | Focus on ML & AI |
| Business-oriented | Technical & research-oriented |
| Easier for beginners | More advanced |
👉 Data Analytics is best for beginners.
📈 DATA ANALYTICS (In Detail)
1️⃣ Tools Used
- Excel – formulas, pivot tables, charts
- SQL – data querying (SELECT, JOIN, GROUP BY)
- Python – Pandas, NumPy for analysis
- Visualization Tools – Power BI, Tableau
2️⃣ Data Analytics Workflow
- Collect data
- Clean data
- Analyze data
- Create reports & dashboards
- Support business decisions
💼 Data Analyst Role
-
Analyze business data
- Create reports and charts
- Identify trends and insights
💰 Salary (India):
- Fresher: ₹30,000 – ₹50,000 / month
- Experienced: ₹80,000+ / month
🤖 DATA SCIENCE (In Detail)
1️⃣ Required Skills
- Python programming
- Libraries: NumPy, Pandas, Matplotlib, Seaborn, Scikit-Learn
2️⃣ Statistics & Mathematics
- Mean, Median, Mode
- Probability
- Standard deviation
- Correlation
3️⃣ Machine Learning
- Supervised learning
- Unsupervised learning
- Regression
- Classification
- Clustering
4️⃣ Deep Learning (Advanced)
- Neural Networks
- TensorFlow
- Keras
5️⃣ Data Science Workflow
- Understand the problem
- Collect data
- Clean & preprocess data
- Build models
- Make predictions
- Improve accuracy
💼 Data Scientist Role
- Build predictive models
- Work with AI systems
- Solve complex data problems
💰 Salary (India):
- Fresher: ₹50,000 – ₹80,000 / month
- Experienced: ₹1,50,000+ / month
🛣 Learning Roadmap (Beginner to Advanced)
Step 1
Excel → SQL
Step 2
Python → Pandas → NumPy
Step 3
Data Visualization (Power BI / Tableau)
Step 4
Statistics
Step 5
Machine Learning (Data Science path)
🧪 Project Ideas
- Sales analysis dashboard
- Student performance analysis
- Customer churn prediction
- Stock price prediction
🎓 Eligibility
- 12th pass is enough
- Basic math knowledge is helpful