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Time Series Analysis
Free openHPI course from the Hasso Plattner Institute, with a certificate.
freeCodeCamp
Relational Database
Bash, SQL, PostgreSQL and Git. Free certification from freeCodeCamp.
freeCodeCamp
Data Visualization
Visualise data with D3.js and APIs. Free certification from freeCodeCamp.
freeCodeCamp
Data Analysis with Python
NumPy, Pandas, Matplotlib and Seaborn. Free certification from freeCodeCamp.
Kaggle
Time Series
Short hands-on Kaggle course with exercises in the browser and a free certificate.