Data cleaning courses can help you learn techniques for identifying and correcting errors in datasets, handling missing values, and standardizing data formats. You can build skills in data validation, outlier detection, and transforming raw data into a usable format. Many courses introduce tools like Python libraries such as Pandas and NumPy, as well as software like OpenRefine, that support executing data cleaning tasks efficiently and ensuring data quality for analysis.

École Polytechnique
Skills you'll gain: Research Methodologies, Research, Research Design, Document Management, Data Collection, Investigation, Query Languages, Databases, Intellectual Property
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Java Programming, Java, Development Environment, Computer Programming, Integrated Development Environments, Object Oriented Programming (OOP), Data Structures, File I/O, Debugging
Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Graph Theory, Data Structures, Algorithms, Tree Maps, Network Analysis, Computational Thinking, Python Programming
Build toward a degree
Advanced · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Artificial Neural Networks, Image Analysis, Event-Driven Programming, Scalability, Deep Learning, C and C++, Performance Tuning, Convolutional Neural Networks, Data-oriented programming, C++ (Programming Language), Digital Signal Processing, Linear Algebra, Distributed Computing, Computer Graphics, System Programming, Mathematical Software, Numerical Analysis, Programming Principles, Computer Architecture, Machine Learning
Build toward a degree
Intermediate · Specialization · 3 - 6 Months

Vanderbilt University
Skills you'll gain: Criminal Investigation and Forensics, Social Justice, Legal Proceedings, Social Sciences, Policy Analysis, Disabilities, Mental Health Diseases and Disorders, Law, Regulation, and Compliance, Cultural Diversity, Case Studies
Beginner · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Epidemiology, Public Health, Public Health and Disease Prevention, Health Systems, Community Health, Health Policy, Program Evaluation, Infectious Diseases, Data Collection, Trend Analysis
Beginner · Course · 1 - 4 Weeks

Peking University
Skills you'll gain: File Systems, Operating Systems, System Software, OS Process Management, Data Storage, Computer Systems, Peripheral Devices, Unix, Linux, Computer Hardware, Microsoft Windows, Algorithms
Intermediate · Course · 3 - 6 Months

ISC2
Skills you'll gain: Network Security, Cybersecurity, Cyber Attacks, Infrastructure Security, Threat Detection, Computer Networking, Data Centers, General Networking, Threat Management, Network Planning And Design, Firewall, Network Protocols, Cloud Computing, TCP/IP, Encryption
Beginner · Course · 1 - 3 Months

Microsoft
Skills you'll gain: Generative AI, Microsoft Copilot, Prompt Engineering, Test Case, Responsible AI, Microsoft Visual Studio, Version Control, Code Review, GitHub, Integrated Development Environments, Software Configuration Management, Software Development Tools, Software Documentation, AI Workflows, AI Enablement, Program Development, Development Environment, Computer Programming Tools, Artificial Intelligence, Project Management
Intermediate · Specialization · 1 - 3 Months

Google Cloud
Skills you'll gain: Site Reliability Engineering, Safety Culture, Culture Transformation, CI/CD, Service Level, System Implementation, Performance Measurement, Data-Driven Decision-Making, Organizational Structure, Incident Management, Automation, Change Management, Goal Setting
Beginner · Course · 1 - 3 Months

Imperial College London
Skills you'll gain: Epidemiology, Mathematical Modeling, Statistical Modeling, Simulations, Risk Modeling, Infectious Diseases, Public Health, Model Evaluation, Predictive Modeling, R Programming, Differential Equations, Data Modeling, Statistical Methods, Probability Distribution
Intermediate · Specialization · 1 - 3 Months

University of London
Skills you'll gain: User Accounts, MongoDB, Full-Stack Web Development, Command-Line Interface, Web Applications, Web Development, Javascript, Database Systems, Data Access, Data Validation, Application Frameworks
Mixed · Course · 1 - 3 Months