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🔹 DATA SCIENCE – INTERVIEW REVISION SHEET* *1️⃣ What is Data Science?* > “Data science is the process of using data, statistics, and machine learning to extract insights and build predictive or decision-making models.” Difference from Data Analytics: - Data Analytics → past & present (what/why) - Data Science → future & automation (what will happen) *2️⃣ Data Science Lifecycle (Very Important)* 1. Business problem understanding 2. Data collection 3. Data cleaning & preprocessing 4. Exploratory Data Analysis (EDA) 5. Feature engineering 6. Model building 7. Model evaluation 8. Deployment & monitoring Interview line: > “I always start from business understanding, not the model.” *3️⃣ Data Types* - Structured → tables, SQL - Semi-structured → JSON, logs - Unstructured → text, images *4️⃣ Statistics You MUST Know* - Central tendency: Mean, Median (use when outliers exist) - Spread: Variance, Standard deviation - Correlation ≠ causation - Normal distribution - Skewness (income → right skewed) *5️⃣ Data Cleaning & Preprocessing* Steps you should say in interviews: 1. Handle missing values 2. Remove duplicates 3. Treat outliers 4. Encode categorical variables 5. Scale numerical data Scaling: - Min-Max → bounded range - Standardization → normal distribution *6️⃣ Feature Engineering (Interview Favorite)* > “Feature engineering is creating meaningful input variables that improve model performance.” Examples: - Extract month from date - Create customer lifetime value - Binning age groups *7️⃣ Machine Learning Basics* - Supervised learning: Regression, Classification - Unsupervised learning: Clustering, Dimensionality reduction *8️⃣ Common Algorithms (Know WHEN to use)* - Regression: Linear regression → continuous output - Classification: Logistic regression, Decision tree, Random forest, SVM - Unsupervised: K-Means → segmentation, PCA → dimensionality reduction *9️⃣ Overfitting vs Underfitting* - Overfitting → model memorizes training data - Underfitting → model too simple Fixes: - Regularization - More data - Cross-validation *🔟 Model Evaluation Metrics* - Classification: Accuracy, Precision, Recall, F1 score, ROC-AUC - Regression: MAE, RMSE Interview line: > “Metric selection depends on business problem.” *1️⃣1️⃣ Imbalanced Data Techniques* - Class weighting - Oversampling / undersampling - SMOTE - Metric preference: Precision, Recall, F1, ROC-AUC *1️⃣2️⃣ Python for Data Science* Core libraries: - NumPy - Pandas - Matplotlib / Seaborn - Scikit-learn Must know: - loc vs iloc - Groupby - Vectorization *1️⃣3️⃣ Model Deployment (Basic Understanding)* - Batch prediction - Real-time prediction - Model monitoring - Model drift Interview line: > “Models must be monitored because data changes over time.” *1️⃣4️⃣ Explain Your Project (Template)* > “The goal was _. I cleaned the data using _. I performed EDA to identify _. I built _ model and evaluated using _. The final outcome was _.” *1️⃣5️⃣ HR-Style Data Science Answers* Why data science? > “I enjoy solving complex problems using data and building models that automate decisions.” Biggest challenge: “Handling messy real-world data.” Strength: “Strong foundation in statistics and ML.” *🔥 LAST-DAY INTERVIEW TIPS* - Explain intuition, not math - Don’t jump to algorithms immediately - Always connect model → business value - Say assumptions clearly

200$ to 20k$ SOL Challenge! As promised, i will do another challenge for those who missed the previous one! Last one we completed in 6 days, let’s do this one even quicker! Join my free group Before closing 👇 https://t.me/+DAKLP7eUy9Y3ZjY0 #ad InsideAds

🔥 Trending Repository: claude-skills 📝 Description: 65 Specialized Skills for Full-Stack Developers. Transform Claude Code into your expert pair programmer. 🔗 Repository URL: https://github.com/Jeffallan/claude-skills 📖 Readme: https://github.com/Jeffallan/claude-skills#readme 📊 Statistics: 🌟 Stars: 498 stars 👀 Watchers: 6 🍴 Forks: 56 forks 💻 Programming Languages: Python - JavaScript - HTML - Astro - Shell - Makefile 🏷️ Related Topics:

#ai_agents #claude #claude_code #claude_skills #claude_marketplace

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🔥 Trending Repository: free-llm-api-resources 📝 Description: A list of free LLM inference resources accessible via API. 🔗 Repository URL: https://github.com/cheahjs/free-llm-api-resources 📖 Readme: https://github.com/cheahjs/free-llm-api-resources#readme 📊 Statistics: 🌟 Stars: 8.5K stars 👀 Watchers: 138 🍴 Forks: 840 forks 💻 Programming Languages: Python 🏷️ Related Topics:

#ai #gemini #openai #llama #claude #llm

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🔥 Trending Repository: claude-code-pm-course 📝 Description: Interactive course teaching Product Managers how to use Claude Code effectively 🔗 Repository URL: https://github.com/carlvellotti/claude-code-pm-course 🌐 Website: https://claude-code-pm-course.vercel.app 📖 Readme: https://github.com/carlvellotti/claude-code-pm-course#readme 📊 Statistics: 🌟 Stars: 669 stars 👀 Watchers: 11 🍴 Forks: 139 forks 💻 Programming Languages: MDX - HTML - Python - JavaScript - Shell - TypeScript - CSS 🏷️ Related Topics: Not available ================================== 🧠 By: https://t.me/DataScienceM

200$ to 20k$ SOL Challenge! As promised, i will do another challenge for those who missed the previous one! Last one we completed in 6 days, let’s do this one even quicker! Join my free group Before closing 👇 https://t.me/+DAKLP7eUy9Y3ZjY0 #ad InsideAds

🔥 Trending Repository: gh-aw 📝 Description: GitHub Agentic Workflows 🔗 Repository URL: https://github.com/github/gh-aw 🌐 Website: https://gh.io/gh-aw 📖 Readme: https://github.com/github/gh-aw#readme 📊 Statistics: 🌟 Stars: 609 stars 👀 Watchers: 4 🍴 Forks: 65 forks 💻 Programming Languages: Go - JavaScript - Shell 🏷️ Related Topics:

#ci #actions #copilot #codex #cai #github_actions #gh_extension #claude_code

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Still relying on slow, outdated earning hacks? What if I told you there’s a faster, legit way to get instant payouts—no scams, no waiting? The catch? You have to act before everyone else catches on… Ready to flip the script? Discover how inside LOOTS EARNING. #ad InsideAds

🔥 Trending Repository: addons 📝 Description: ➕ Docker add-ons for Home Assistant 🔗 Repository URL: https://github.com/home-assistant/addons 🌐 Website: https://home-assistant.io/hassio/ 📖 Readme: https://github.com/home-assistant/addons#readme 📊 Statistics: 🌟 Stars: 1.9K stars 👀 Watchers: 73 🍴 Forks: 1.8K forks 💻 Programming Languages: Shell - Dockerfile - Groovy - HTML - Python - C - CMake 🏷️ Related Topics:

#docker #iot #automation #home #hacktoberfest

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🔥 Trending Repository: monty 📝 Description: A minimal, secure Python interpreter written in Rust for use by AI 🔗 Repository URL: https://github.com/pydantic/monty 📖 Readme: https://github.com/pydantic/monty#readme 📊 Statistics: 🌟 Stars: 2.2K stars 👀 Watchers: 17 🍴 Forks: 55 forks 💻 Programming Languages: Rust - Python - TypeScript 🏷️ Related Topics: Not available ================================== 🧠 By: https://t.me/DataScienceM

Here is a powerful 𝗜𝗡𝗧𝗘𝗥𝗩𝗜𝗘𝗪 𝗧𝗜𝗣 to help you land a job! Most people who are skilled enough would be able to clear technical rounds with ease. But when it comes to 𝗯𝗲𝗵𝗮𝘃𝗶𝗼𝗿𝗮𝗹/𝗰𝘂𝗹𝘁𝘂𝗿𝗲 𝗳𝗶𝘁 rounds, some folks may falter and lose the potential offer. Many companies schedule a behavioral round with a top-level manager in the organization to understand the culture fit (except for freshers). One needs to clear this round to reach the salary negotiation round. Here are some tips to clear such rounds: 1️⃣ Once the HR schedules the interview, try to find the LinkedIn profile of the interviewer using the name in their email ID. 2️⃣ Learn more about his/her past experiences and try to strike up a conversation on that during the interview. 3️⃣ This shows that you have done good research and also helps strike a personal connection. 4️⃣ Also, this is the round not just to evaluate if you're a fit for the company, but also to assess if the company is a right fit for you. 5️⃣ Hence, feel free to ask many questions about your role and company to get a clear understanding before taking the offer. This shows that you really care about the role you're getting into. 💡 𝗕𝗼𝗻𝘂𝘀 𝘁𝗶𝗽 - Be polite yet assertive in such interviews. It impresses a lot of senior folks.

This channels is for Programmers, Coders, Software Engineers. 0️⃣ Python 1️⃣ Data Science 2️⃣ Machine Learning 3️⃣ Data Visualization 4️⃣ Artificial Intelligence 5️⃣ Data Analysis 6️⃣ Statistics 7️⃣ Deep Learning 8️⃣ programming Languages ✅ https://t.me/addlist/8_rRW2scgfRhOTc0 ✅ https://t.me/Codeprogrammer

Don’t wait for the perfect moment. Start today Install that tool, pick that dataset, take that course. Every big goal begins with Day One 💪

One day or Day one. You decide. Data Science edition. 𝗢𝗻𝗲 𝗗𝗮𝘆 : I will learn SQL. 𝗗𝗮𝘆 𝗢𝗻𝗲: Download mySQL Workbench. 𝗢𝗻𝗲 𝗗𝗮𝘆: I will build my projects for my portfolio. 𝗗𝗮𝘆 𝗢𝗻𝗲: Look on Kaggle for a dataset to work on. 𝗢𝗻𝗲 𝗗𝗮𝘆: I will master statistics. 𝗗𝗮𝘆 𝗢𝗻𝗲: Start the free Khan Academy Statistics and Probability course. 𝗢𝗻𝗲 𝗗𝗮𝘆: I will learn to tell stories with data. 𝗗𝗮𝘆 𝗢𝗻𝗲: Install Tableau Public and create my first chart. 𝗢𝗻𝗲 𝗗𝗮𝘆: I will become a Data Scientist. 𝗗𝗮𝘆 𝗢𝗻𝗲: Update my resume and apply to some Data Science job postings.

🔥 Trending Repository: gitbutler 📝 Description: The GitButler version control client, backed by Git, powered by Tauri/Rust/Svelte 🔗 Repository URL: https://github.com/gitbutlerapp/gitbutler 🌐 Website: https://gitbutler.com 📖 Readme: https://github.com/gitbutlerapp/gitbutler#readme 📊 Statistics: 🌟 Stars: 17.7K stars 👀 Watchers: 47 🍴 Forks: 768 forks 💻 Programming Languages: Rust - Svelte - TypeScript - Shell - CSS - JavaScript 🏷️ Related Topics:

#github #git #tauri

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🔥 Trending Repository: awesome-claude-skills 📝 Description: A curated list of awesome Claude Skills, resources, and tools for customizing Claude AI workflows 🔗 Repository URL: https://github.com/ComposioHQ/awesome-claude-skills 📖 Readme: https://github.com/ComposioHQ/awesome-claude-skills#readme 📊 Statistics: 🌟 Stars: 31.5K stars 👀 Watchers: 244 🍴 Forks: 3K forks 💻 Programming Languages: Python - JavaScript - Shell 🏷️ Related Topics:

#automation #skill #mcp #saas #cursor #codex #workflow_automation #ai_agents #claude #rube #gemini_cli #composio #antigravity #agent_skills #claude_code

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🔥 Trending Repository: escrcpy 📝 Description: 📱 Display and control your Android device graphically with scrcpy. 🔗 Repository URL: https://github.com/viarotel-org/escrcpy 🌐 Website: https://viarotel.eu.org/ 📖 Readme: https://github.com/viarotel-org/escrcpy#readme 📊 Statistics: 🌟 Stars: 7.7K stars 👀 Watchers: 48 🍴 Forks: 563 forks 💻 Programming Languages: JavaScript - Vue - TypeScript - Roff - CSS - VBScript 🏷️ Related Topics:

#android #windows #macos #linux #screenshots #gui #recording #screensharing #mirroring #hacktoberfest #scrcpy #scrcpy_engine #gnirehtet #genymobile #scrcpy_gui #hacktoberfest2025 #hacktoberfest2026

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🔥 Trending Repository: MiniCPM-o 📝 Description: A Gemini 2.5 Flash Level MLLM for Vision, Speech, and Full-Duplex Multimodal Live Streaming on Your Phone 🔗 Repository URL: https://github.com/OpenBMB/MiniCPM-o 📖 Readme: https://github.com/OpenBMB/MiniCPM-o#readme 📊 Statistics: 🌟 Stars: 23.1K stars 👀 Watchers: 156 🍴 Forks: 1.8K forks 💻 Programming Languages: Python - Vue - JavaScript - Shell - Less - CSS 🏷️ Related Topics:

#multi_modal #minicpm #minicpm_v

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🔥 Trending Repository: heretic 📝 Description: Fully automatic censorship removal for language models 🔗 Repository URL: https://github.com/p-e-w/heretic 📖 Readme: https://github.com/p-e-w/heretic#readme 📊 Statistics: 🌟 Stars: 4.5K stars 👀 Watchers: 27 🍴 Forks: 441 forks 💻 Programming Languages: Python 🏷️ Related Topics:

#transformer #llm #abliteration

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🔥 Trending Repository: litebox 📝 Description: A security-focused library OS supporting kernel- and user-mode execution 🔗 Repository URL: https://github.com/microsoft/litebox 📖 Readme: https://github.com/microsoft/litebox#readme 📊 Statistics: 🌟 Stars: 914 stars 👀 Watchers: 11 🍴 Forks: 40 forks 💻 Programming Languages: Rust - C - JavaScript - CSS - Assembly - Python 🏷️ Related Topics: Not available ================================== 🧠 By: https://t.me/DataScienceM