π° How to become a data scientist in 2025?π¨π»βπ» If you want to become a data science professional, follow this path! I've prepared a complete roadmap with the best free resources where you can learn the essential skills in this field.
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Step 1: Strengthen your math and statistics!βοΈ The foundation of learning data science is mathematics, linear algebra, statistics, and probability. Topics you should master:
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Linear algebra: matrices, vectors, eigenvalues.
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Course: MIT 18.06 Linear Algebraβ
Calculus: derivative, integral, optimization.
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Course: MIT Single Variable Calculusβ
Statistics and probability: Bayes' theorem, hypothesis testing.
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Course: Statistics 110βββββ
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Step 2: Learn to code.βοΈ Learn Python and become proficient in coding. The most important topics you need to master are:
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Python: Pandas, NumPy, Matplotlib libraries
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Course: FreeCodeCamp Python Courseβ
SQL language: Join commands, Window functions, query optimization.
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Course: Stanford SQL Courseβ
Data structures and algorithms: arrays, linked lists, trees.
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Course: MIT Introduction to Algorithmsβββββ
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Step 3: Clean and visualize dataβοΈ Learn how to process and clean data and then create an engaging story from it!
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Data cleaning: Working with missing values ββand detecting outliers.
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Course: Data Cleaningβ
Data visualization: Matplotlib, Seaborn, Tableau
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Course: Data Visualization Tutorialβββββ
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Step 4: Learn Machine LearningβοΈ It's time to enter the exciting world of machine learning! You should know these topics:
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Supervised learning: regression, classification.
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Unsupervised learning: clustering, PCA, anomaly detection.
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Deep learning: neural networks, CNN, RNN
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Course: CS229: Machine Learningβββββ
π’ Step 5: Working with Big Data and Cloud TechnologiesβοΈ
If you're going to work in the real world, you need to know how to work with Big Data and cloud computing.
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Big Data Tools: Hadoop, Spark, Dask
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Cloud platforms: AWS, GCP, Azure
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Course: Data Engineeringβββββ
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Step 6: Do real projects!βοΈ Enough theory, it's time to get coding! Do real projects and build a strong portfolio.
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Kaggle competitions: solving real-world challenges.
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End-to-End projects: data collection, modeling, implementation.
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GitHub: Publish your projects on GitHub.
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Platform: Kaggleπ
Platform: ods.aiβββββ
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Step 7: Learn MLOps and deploy modelsβοΈ Machine learning is not just about building a model! You need to learn how to deploy and monitor a model.
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MLOps training: model versioning, monitoring, model retraining.
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Deployment models: Flask, FastAPI, Docker
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Course: Stanford MLOps Courseβββββ
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Step 8: Stay up to date and networkβοΈ Data science is changing every day, so it is necessary to update yourself every day and stay in regular contact with experienced people and experts in this field.
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Read scientific articles: arXiv, Google Scholar
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Connect with the data community:π
Site: Papers with codeπ
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